taxonID	type	description	language	source
03AE9874FFFFFFB5FF3EFF39FBDB00CF.taxon	description	Croasdale & Flint 1988, p. 81, pl. 29, figs 6,7. Fig. 3 a	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFFFFFB5FF3EFF39FBDB00CF.taxon	discussion	Comments: Croasdale & Flint (1988) regarded this variety as synonymous with the typical species. They also stated that Actinotaenium turgidum (Brébisson ex Ralfs) Teiling is found in acidic to circum-neutral, mesotrophic waters. It is rated as mesotrophic in Coesel & Meesters (2007).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFFFFFB5FF3EFF39FBDB00CF.taxon	distribution	Distribution: Cosmopolitan. A new record for Kalimantan since A. turgidum (as Cosmarium turgidum Brébisson ex Ralfs) has been previously reported from Sumatra and Java by Krieger (1932).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF0FFB5FF3EFED6FDB1029F.taxon	description	Scott & Prescott 1961, p. 123, pl. 62, fig. 1. Fig. 3 b	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF0FFB5FF3EFED6FDB1029F.taxon	discussion	Comments: Coesel & Meesters (2007) rated this species as acidophilous and oligotrophic. Croasdale et al. (1994) stated that this species is usually found in oligotrophic waters but noted that it also occured in a much broader range of pH.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF0FFB5FF3EFED6FDB1029F.taxon	distribution	Distribution: Cosmopolitan. Scott & Prescott (1961) encountered this speices frequently in their collections from Java, Sumatra and Kalimantan (as Borneo).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF0FFB5FF3EFBFDFC3C05B7.taxon	description	Fig. 4 b	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF0FFB5FF3EFBFDFC3C05B7.taxon	discussion	Comments: We have designated this species as Cosmarium cf. bioculatum by virtue of the size range of our specimens being within the limits of the quoted dimensions of this species. Coesel & Meesters (2007) rated this desmid as meso-eutrophic and found in slightly acidic to alkaline waterbodies. However, Croasdale & Flint (1988) rated it as oligo-mesotrophic and found in moderately acid to occasionally lime-rich habitats.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF0FFB5FF3EFBFDFC3C05B7.taxon	distribution	Distribution: Probably cosmopolitan but the distribution of this species is not well understood due to it being confused with other similar Cosmarium species see Coesel & Meesters (2007).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF0FFB5FF3EFD65FDC403E7.taxon	description	Croasdale & Flint 1988, p. 52, pl. 41, figs 15 – 18. Fig. 4 a	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF0FFB5FF3EFD65FDC403E7.taxon	discussion	Comments: Found in small bodies of oligotrophic waters that are acidic to circumneutral Croasdale & Flint (1988). This species is rated as oligo-mesotrophic by Coesel & Meesters (2007).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF0FFB5FF3EFD65FDC403E7.taxon	distribution	Distribution: Cosmopolitan.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF0FFB5FF3EFA0DFA4506B3.taxon	description	Fig. 4 c	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF0FFB5FF3EFA0DFA4506B3.taxon	distribution	Distribution: Europe, North America, South America, India; probably cosmopolitan. A new record for Indonesia.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF0FFB5FF3EF911FDE707D3.taxon	description	Fig. 4 d	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF0FFB5FF3EF911FDE707D3.taxon	distribution	Distribution: Previously reported from the Phillipines, Sumatra, Nigeria (Kadiri 2002), and Australia (Ling & Tyler 2000). A new record for Kalimantan.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF1FFB4FF3EFF41FDC401CB.taxon	description	Fig. 4 e	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF1FFB4FF3EFF41FDC401CB.taxon	discussion	Comments: Croasdale & Flint (1988) rated this species as very adaptable, being found in bodies of water that is either acidic or alkaline, dystrophic to eutrophic. Coesel & Meesters (2007) also noted that it is commonly found in slightly acidic to slightly alkaline waters but classified it as mesotrophic.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF1FFB4FF3EFF41FDC401CB.taxon	distribution	Distribution: Cosmopolitan.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF2FFB7FF3EFF41FCF801A7.taxon	description	Fig. 4 f	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF2FFB7FF3EFF41FCF801A7.taxon	distribution	Distribution: A new record for Kalimantan. Originally described from Indonesia by Krieger (1932) based on collections taken from the islands of Sumatra and Java. This species also occured in Brazil, Mali, Bangladesh, India and Australia and Tchad (Compère 1970); indicating a tropical distribution.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF2FFB7FF3EFE3DFBA20377.taxon	description	Fig. 4 g	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF2FFB7FF3EFE3DFBA20377.taxon	discussion	Comments: The semicells have a disctinctive cell wall-thickening at the basal angles. Cosmarium obsoletum var. sitvense Gutwinski, which is distinguished by the presence of a large pore within the thickened basal angles of the cell wall, was also encountered and has been included here. Chloroplast in each semicell has two pyrenoids. This species is found in mildly acidic to mildly alkaline waters from aufwuchs to plankton of mires, ponds and lakes Croasdale & Flint (1988). Rated as meso-oligotrophic by Coesel & Meesters (2007).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF2FFB7FF3EFE3DFBA20377.taxon	distribution	Distribution: Cosmopolitan but apparently more widespread in in tropical regions.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF2FFB7FF3EFC4DFDC404BB.taxon	description	Fig. 4 h	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF2FFB7FF3EFC4DFDC404BB.taxon	discussion	Comments: The cell outline and size suggest this species is Cosmarium obtusatum (Schmidle) Schmidle. However, confirmation of the cell wall ornamentation and observations of our specimens from different viewpoints is required.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF2FFB7FF3EFC4DFDC404BB.taxon	distribution	Distribution: Cosmopolitan.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF2FFB7FF3EFB09FC850603.taxon	description	Fig. 4 i	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF2FFB7FF3EFB09FC850603.taxon	discussion	Comments: Distinguished from similarly-shaped Cosmarium species by possessing only a single pyrenoid per semicell. Typically found in small bodies of oligotrophic water with low pH; including rice fields in the tropics Croasdale & Flint (1988).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF2FFB7FF3EFB09FC850603.taxon	distribution	Distribution: Cosmopolitan. A new record for Indonesia.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF2FFB7FF3EF9E1FDC4076B.taxon	description	Fig. 4 j	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF2FFB7FF3EF9E1FDC4076B.taxon	discussion	Comments: Commonly found in oligotrophic ponds and small lakes that are slightly acidic to slightly alkaline; also occurs in rice fields but rarely encountered in the plankton or eutrophic waters Croasdale & Flint (1988). Rated as meso-eutrophic by Coesel & Meesters (2007) and common in various slightly acidic to slightly alkaline waters.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF2FFB7FF3EF9E1FDC4076B.taxon	distribution	Distribution: Cosmopolitan.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF2FFB6FF3EF879FDC400CF.taxon	description	Fig. 4 k	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF2FFB6FF3EF879FDC400CF.taxon	discussion	Comments: Classified as mesotrophic by Coesel & Meesters (2007). Distribution: Cosmopolitan.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF3FFB6FF3EFED5FF1F029F.taxon	description	Fig. 4 l	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF3FFB6FF3EFED5FF1F029F.taxon	discussion	Comments: The size of the figured cell and its outline with truncated apeax suggest this species is Cosmarium sublatereundatum West & G. S. West. However, confirmation of the cell wall ornamentation and observations of the speciemens from different viewpoints is needed.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF3FFB6FF3EFED5FF1F029F.taxon	distribution	Distribution: Previous records of this species suggested a more or less tropical to sub-tropical distribution: Russian Federation (Asian part), Japan, Myanmar (Burma), Bangladesh, India, Iraq, Africa, Paraguay, France and Poland.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF3FFB6FF3EFD65FDC403C3.taxon	description	Fig. 4 m	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF3FFB6FF3EFD65FDC403C3.taxon	discussion	Comments: Observations of the cell wall sculpturing on the face of the semicells are required to confirm our designation.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF3FFB6FF3EFD65FDC403C3.taxon	distribution	Distribution: Cosmopolitan.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF3FFB6FF3EFC21FAE80507.taxon	description	Scott & Prescott 1961, p. 124, pl. 62, figs 5 – 7. Fig. 5 a	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF3FFB6FF3EFC21FAE80507.taxon	discussion	Comments: Some authors consider this taxon as a synonym of Desmidium baileyi (Ralfs) Nordstedt. Distribution: Mostly recorded from (sub) tropical regions: Nigeria, India, Thailand, Japan, Australia.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF3FFB6FF3EFA9DFEE4064B.taxon	description	Fig. 5 b	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF3FFB6FF3EFA9DFEE4064B.taxon	discussion	Comments: Croasdale et al. (1994) note that this species is often found in small bodies of acidic water.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF3FFB6FF3EFA9DFEE4064B.taxon	distribution	Distribution: A new record for Kalimantan, previously reported from the Indonesian islands of Java and Sumatra. Cosmopolitan	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF3FFB6FF3EF959FC9807D3.taxon	description	Fig. 5 c	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF3FFB6FF3EF959FC9807D3.taxon	discussion	Comments: Coesel & Meesters (2007) rated this species as mesotrophic and occassionally found in peat pits. Croasdale et al. (1994) deemed it a tolerant species as it is found in a range of habitats but also noted that it is mainly found in small bodies of oligotrophic, acid water.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF3FFB6FF3EF959FC9807D3.taxon	distribution	Distribution: Cosmopolitan. A new record for Kalimantan.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF3FFB1FF3EF831FC33017A.taxon	description	Coesel & Meesters 2007, p. 65, pl. 32, figs 3,4. Fig. 5 d	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF3FFB1FF3EF831FC33017A.taxon	discussion	Comments: Coesel & Meesters (2007) rated this species as acidophilous that is found in oligotrophic waters. Distribution: A new record for Kalimantan. This is a widespread species.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF4FFB1FF3EF96CFA9207B5.taxon	description	Scott & Prescott 1961, p. 30, pl. 10, figs 1 & 2. Fig. 6 a	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF4FFB1FF3EF96CFA9207B5.taxon	distribution	Distribution: Indonesia (Kalimantan and Sumatra), India and Cambodia (see Kanetsuna & Yamagishi 2018).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF4FFB0FF3EF80BFF1001A2.taxon	description	Krieger 1937, p. 550, pl. 75, figs 9 & 10. Fig. 6 b	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF4FFB0FF3EF80BFF1001A2.taxon	discussion	Comments: Its basionym is Euastrum cosmarioides var. curtum W. West & G. S. West. This is likely a nascent form of the type variety due to rapidly dividing cells.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF4FFB0FF3EF80BFF1001A2.taxon	distribution	Distribution: A new varietal record for Kalimantan, previously reported from Singapore and Angola (Krieger 1937).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF5FFB0FF3EFE00FDC402E6.taxon	description	Fig. 6 c	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF5FFB0FF3EFE00FDC402E6.taxon	discussion	Comments: Rated as meso-oligotrophic by Coesel & Meesters (2007) and found in a wide range of acidic to circumneutral habitats Croasdale & Flint (1986).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF5FFB0FF3EFE00FDC402E6.taxon	distribution	Distribution: Cosmopolitan.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF5FFB0FF3EFCFCFF130492.taxon	description	Fig. 6 d	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF5FFB0FF3EFCFCFF130492.taxon	discussion	Comments: We encountered a bewildering array of forms that correspond to many already-proposed varities and formae of this supposed taxon. Since we were unable to clearly discern the cellular ornamentation and that these forms may be confused with similar species like Euastrum ansatum Ehrenberg ex Ralfs, we could not confidently identify our material to the species level. However, the other varities of E. didelta that were successfully discerned are indicated below.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF5FFB0FF3EFB70FC5805D6.taxon	description	Fig. 6 e	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF5FFB0FF3EFB70FC5805D6.taxon	discussion	Comments: Its basionym is Euastrum sinuosum var. capitatum Scott & Prescott.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF5FFB0FF3EFB70FC5805D6.taxon	distribution	Distribution: A new varietal record for Kalimantan. Originally described from Sumatra, Indonesia by Scott & Prescott (1961). Also reported from India, Cambodia and Bangladesh.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF5FFB0FF3EFA2CFE880719.taxon	description	Fig. 6 f	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF5FFB0FF3EFA2CFE880719.taxon	discussion	Comments: Its basionym is Euastrum sinuosum var. dideltoides Krieger.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF5FFB0FF3EFA2CFE880719.taxon	distribution	Distribution: A new varietal record for Kalimantan, Indonesia. Reported previously from Sumatra, Thailand, China and Japan.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF5FFB2FF3EF8E8FB4400CF.taxon	description	Fig. 6 g	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF5FFB2FF3EF8E8FB4400CF.taxon	discussion	Comments: A poorly known species, it may be related or even synonymous to other, morphologically-similar species such as Euastrum quadriceps Nordstedt.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF5FFB2FF3EF8E8FB4400CF.taxon	distribution	Distribution: Australia (New South Wales), Africa (South Africa as “ forma ”) and Sri Lanka. A new record for Indonesia. Based on the aformentioned localities, we have treated this as a tropical species.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF7FFB2FF3EFED5FDF1029F.taxon	description	Fig. 6 h	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF7FFB2FF3EFED5FDF1029F.taxon	discussion	Comments: While we are confident of our designation at the species level, we were unable to determine what varitey the encountered specimens are. Coesel & Meesters (2007) rated this species as meso-oligotrphic and Croasdale & Flint (1986) noted that it was found in waters that tend to be acidic (preferring Sphagnum) but also broader pH range of circumneutral.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF7FFB2FF3EFED5FDF1029F.taxon	distribution	Distribution: This species and its many varieties are widespread and have been previously reported from southeast Asia, including Kalimantan (Borneo).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF7FFB2FF3EFBB5FDB1054F.taxon	description	Fig. 6 j	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF7FFB2FF3EFBB5FDB1054F.taxon	discussion	Comments: This variety is characterised by a large central pit on the centre of the semicell face. Distribution: An Indonesian endemic.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF7FFB2FF3EFD65FED3042F.taxon	description	Fig. 6 i	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF7FFB2FF3EFD65FED3042F.taxon	discussion	Comments: Replaced synonym: Euastrum sinuosum Lenormand ex W. Archer. There are several varities and formae of this species (see Anissimova & Guiry (2021 a )). We consider the cell outline here best matches the original depictions of the type species. Croasdale & Flint (1986) noted that this species is typically found in acidic habitats, especially Sphagnum waters.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF7FFB2FF3EFD65FED3042F.taxon	distribution	Distribution: Cosmopolitan. Several varieties of this species have been reported from Indonesia, including Kalimantan.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF7FFB2FF3EFA55FDC406D7.taxon	description	Fig. 6 k	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF7FFB2FF3EFA55FDC406D7.taxon	discussion	Comments: The cell outline is suggestive of the species Euastrum pulchellum Brébisson, however, observations of the finer cell wall ornamentation is needed for confirmation. It could also be comparable with Euastrum dubium var. protuberans Kanetsuna.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF7FFB2FF3EFA55FDC406D7.taxon	distribution	Distribution: Cosmopolitan.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF7FFB2FF3EF92DFD4F07F7.taxon	description	Fig. 6 l	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFF7FFB2FF3EF92DFD4F07F7.taxon	distribution	Distribution: Indonesia (Sumatra and Kalimantan), India, Bangladesh, Thailand, Myanmar (Burma), the Phillipines, Cambodia, Japan, South Korea, and Australia.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFE8FFADFF3EFF41FC4B01A7.taxon	description	Fig. 6 m	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFE8FFADFF3EFF41FC4B01A7.taxon	distribution	Distribution: A new record for Kalimantan. In Indonesia, this variety is known from the original work of Scott & Prescott (1961) from their collections taken from Sumatra. However, it has also been recorded from Southwest Asia / India (Suseela & Toppo, 2007, Lone et al., 2021, Verma et al. 2021).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFE8FFADFF3EFE3DFF3702C7.taxon	description	Fig. 6 n	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFE8FFADFF3EFE3DFF3702C7.taxon	distribution	Distribution: South-west Asia (Bangladesh, India), Asia (China, Japan, Taiwan), South-east Asia (Thailand) and Australia.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFE8FFADFF3EFD24FE360417.taxon	description	Coesel & Meesters 2007, p. 65, pl. 32, figs 5 – 8. Fig. 7 a	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFE8FFADFF3EFD24FE360417.taxon	discussion	Comments: Acidophilous and often found in oligotrophic waters (Coesel & Meesters 2007). Distribution: Cosmpolitan.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFE8FFADFF3EFA84FC290807.taxon	description	Fig. 7 c	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFE8FFADFF3EFA84FC290807.taxon	discussion	Comments: Based on the original description, the correct spelling for the varietal name should be “ naogaonensis ” (feminine), as it should agree in gender with the genus Micrasterias (feminine), rather than “ naogaonense ” (neuter) in the original description (Islam & Haroon, 1980). The cell ornamentation here are similar to those depicted as Micrasterias apiculata var. lacerata Turner in Scott & Prescott (1961). The arrangement and number of corolla of spines matched our specimens, albeit that the fourth crown of spines which is nearest to the apex of the polar lobe is not completely developed as ours. Joshua (1886) informally depicted and described a new forma of Micrasterias apiculata Meneghini ex Ralfs from Myanmar (Burma). He stated that it is “ a variety with central protuberances in each semicell circled with strong spines ”. Moreover, his depiction of this “ forma ” is dichotypical, with one semicell possessing four crowns of spines and the other, only one. Based on these observations, we suspected the two varieties discussed here are synonymous, but a more in-depth investigation into the polymorphism of these and other morophologically similar entities in this region is required for confirmation. It should also be noted that Turner’s (1893) protologue of M. apiculata var. lacerata did not include any mention or depiction of this kind of cellular ornamentation.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFE8FFADFF3EFA84FC290807.taxon	distribution	Distribution: Africa, Indonesia, Thailand, Australia, India, Bangladesh when accounting for all varieties and forma mentioned above. A new varietal record for Indonesia, however, previously reported under different designations from this country if considering the above discussion on potential synonymy.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFE8FFADFF3EFBF4FBBF0527.taxon	description	Fig. 7 b	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFE8FFADFF3EFBF4FBBF0527.taxon	discussion	Comments: Cell was only just under 200 µm in length and quite smaller than the original description. Distribution: Reported only previously from Kalimantan by Scott & Prescott (1961).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFE9FFACFF3EF9ECFB88077E.taxon	description	Ling & Tyler 2001, p. 196, pl. 89, fig. 1. Fig. 7 d Synonym: Micrasterias torreyi var. doveri (Biswas) Krieger	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFE9FFACFF3EF9ECFB88077E.taxon	discussion	Comments: According to Krieger (1939) it is Micrasterias torreyi var. doveri (Biswas) Willi Krieger.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFE9FFACFF3EF9ECFB88077E.taxon	distribution	Distribution: Malaysia, Indonesia (inc. Kalimantan), Northern Australia, Africa.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFE9FFAFFF3EF844FE00017F.taxon	description	Fig. 7 e	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFE9FFAFFF3EF844FE00017F.taxon	discussion	Comments: Our figure is most comparable to those depicted in figure 2 of M. mahabuleshwarensis var. dichotoma Smith in Prescott et al. (1977). They stated that the lateral lobes are quite variable in that they can be reduced to the point that they resemble Micrasterias americana (Ehrenberg) Ralfs.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFE9FFAFFF3EF844FE00017F.taxon	distribution	Distribution: A new variteal record for Indonesia. Micrasterias mahabuleshwarensis var. dichotoma has previosuly been reported from North America, South America, Africa, Asia, Australia, and has been classified as tropical in distribution here.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEAFFAFFF3EFE45FB14029F.taxon	description	Fig. 7 f	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEAFFAFFF3EFE45FB14029F.taxon	discussion	Comments: Cell size and lateral lobe morphology at or approaching the variety mandibula from Krieger (1932). Distribution: Reported from Indonesia (inc. Kalimantan), New Zealand, and the Philippines.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEAFFAFFF3EFD65FBEB03E7.taxon	description	Fig. 7 g	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEAFFAFFF3EFD65FBEB03E7.taxon	discussion	Comments: Like the specimens encountered in Scott & Prescott (1961) from Kalimantan, the lateral lobes are more retuse compared to the original depicitons from Krieger (1932). Scott & Prescott (1961) also noted this morphological difference did not warrant any taxonomic recognition as it is merely polymorphism.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEAFFAFFF3EFD65FBEB03E7.taxon	distribution	Distribution: Reported from Indonesia (inc. Kalimantan) and the Philippines.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEAFFAFFF3EFBFDFE47054F.taxon	description	Fig. 7 h Commments: Rated as oligo-mesotrophic in Coesel & Meesters (2007) and found in moderately acid waters in Croasdale & Flint (1986).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEAFFAFFF3EFBFDFE47054F.taxon	distribution	Distribution: A new record for Kalimantan. Previously reported from Java and Sumatra by Scott & Prescott (1961). Cosmopolitan.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEAFFAFFF3EFA55FDC406D7.taxon	description	Croasdale & Flint 1986, p. 71, pl. 14, figs 8, 16. Fig. 8 a	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEAFFAFFF3EFA55FDC406D7.taxon	discussion	Comments: Coesel & Meesters (2007) noted that this species is commonly found in (slightly) acidic waters and that this desmid is mesotrophic. However, Croasdale & Flint (1986) rated it as oligotrophic	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEAFFAFFF3EFA55FDC406D7.taxon	distribution	Distribution: Cosmopolitan.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEAFFAFFF3EF92DFAA407D3.taxon	description	Fig. 8 b	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEAFFAFFF3EF92DFAA407D3.taxon	distribution	Distribution: Reported as “ widespread ” by Croasdale & Flint (1986), we therefore classify it as cosmopolitan.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEBFFA9FF3EF87FFD120113.taxon	description	Fig. 8 c	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEBFFA9FF3EF87FFD120113.taxon	discussion	Comments: Typical habitat of the type variety reported as dystrophic by Croasdale & Flint (1986).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEBFFA9FF3EF87FFD120113.taxon	distribution	Distribution: This species and its varieties are found tropical and subtropical regions of Africa, Australia, Indonesia, South America (Croasdale & Flint 1986).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFECFFA9FF3EFEF1FBDE029F.taxon	description	Coesel & Meesters 2013, p. 72, pl. 39, figs 1, 2. Fig. 8 d	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFECFFA9FF3EFEF1FBDE029F.taxon	discussion	Comments: Occurs in the benthos and tychoplankton of slightly acidic, oligo-mesotrophic bodies of water according to Coesel & Meesters (2013).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFECFFA9FF3EFEF1FBDE029F.taxon	distribution	Distribution: A new record for Kalimantan. Cosmopolitan and considered especially widespread throughout the Indo-Malaysian / North Australian desmid bioregion by Coesel & Meesters (2013).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFECFFA8FF3EFD65FCCC0183.taxon	description	Fig. 8 e	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFECFFA8FF3EFD65FCCC0183.taxon	discussion	Comments: We have tentatively assigned these forms as Staurastrum cf. cyrtocerum Brébisson on the basis of the similar cell morphology: tri- and quadri-radiate, along with the processes being characteristically convergent and slightly inflexed. Occurs in slightly acidic to slighlty alkaline, mesotrophic waterbodies (Coesel & Meesters, 2013).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFECFFA8FF3EFD65FCCC0183.taxon	distribution	Distribution: Coesel & Meesters (2013) considered it distribution as potentially cosmopolitan but not well understood due to its confusion with other, morphologically-similar species. * Staurastrum distentum Wolle Ling & Tyler 2001, p. 221, pl. 135, figs 5 & 6. Fig. 8 f	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFECFFA8FF3EFD65FCCC0183.taxon	discussion	Comments: The processes are much shorter and the ornamentation is considerably diminished in some of our specimens.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFECFFA8FF3EFD65FCCC0183.taxon	distribution	Distribution: A new record for Kalimantan. Previously reported from Sumatra by Scott & Prescott (1961). Mostly (sub) tropical in distribution: North America, South America (Brazil), Africa, China, Japan, Australia (Northern Territory). * Staurastrum podlachicum Eichler & Gutwiński Coesel & Meesters 2013, p. 134, pl. 65, figs 9 – 12. Fig. 8 g	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFECFFA8FF3EFD65FCCC0183.taxon	discussion	Comments: Coesel & Meesters (2013) noted that this species may be a nascent stage of Staurastrum forficulatum P. Lundell. Similarly, Ling & Tyler (2001) included morphologically comparable forms as Staurastrum ehrengergianum (Nägeli) Archer, and stated that their material with the undeveloped processes were identifiable with the “ Staurastrum oligacanthum var. podlachicum (Eichler & Gutwiński) West & G. S. West morpha ” described in Croasdale et al. (1994). Found in acidic, oligotrophic waters (Coesel & Meesters 2013).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFECFFA8FF3EFD65FCCC0183.taxon	distribution	Distribution: North America, Europe and New Zealand. Australia is included when considering the reduced forms of S. ehrengergianum reported by Ling & Tyler (2001). A new record for Kalimantan and Indonesia. * Staurastrum retusum W. B. Turner Coesel & Meesters 2013, p. 142, pl. 33, figs 4 – 11. Fig. 8 h	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFECFFA8FF3EFD65FCCC0183.taxon	discussion	Comments: Found in acidic, oligo-mesotrophic water bodies (Coesel & Meesters, 2013). Only one specimen was found during our study indicating its rarety in nature. Consequently detailed observation could not be made, especially at the apical view. However, the specimen closedly resembled those of S. retusum reported in Coesel & Meesters (2013). More sampling effort for this species is required to determine it distinction to other morphologically similar species (e. g., species of Cosmarium).	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFECFFA8FF3EFD65FCCC0183.taxon	distribution	Distribution: A new record for Kalimantan. Regarded by Coesel & Meesters (2013) as very common in the INMAR desmid bioregion and practically rare elsewhere.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEDFFA8FF3EFE61FC93040B.taxon	description	Coesel & Meesters 2013, p. 20, pl. 1, figs 1 – 11. Fig. 8 i	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEDFFA8FF3EFE61FC93040B.taxon	discussion	Comments: Coesel & Meesters (2013) stated that this species is found in the benthos or plankton of acidic, oligo-mesotrophic waters.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEDFFA8FF3EFE61FC93040B.taxon	distribution	Distribution: A new record for Kalimantan. Cosmopolitan. * Staurodesmus patens (Nordstedt) Croasdale Coesel & Meesters 2013, p. 32, pl. 18, figs 1 – 8. Fig. 8 j	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEDFFA8FF3EFE61FC93040B.taxon	discussion	Comments: Occurs in the (tycho) plankton of acidic, oligo-mesotrophic bodies of water (Coesel & Meesters 2013). Distribution: A new record for Kalimantan. Cosmopolitan	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEDFFA8FF3EFB98FDC405DB.taxon	description	Croasdale & Flint 1986, p. 81, pl. 17, figs 1, 2. Fig. 8 k	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEDFFA8FF3EFB98FDC405DB.taxon	discussion	Comments: Certain identification between this species and Tetmemorus laevis var. tropicus Krieger relies on observations of the differently shaped zygospores, particularly with collections from tropical regions where the latter species was originally described from (see Croasdale and Flint (1986 )). Furthermore, Tetmemorus laevis var. tropicus Willi Krieger is currently regarded as a synonym of Tetmemorus granulatus Brébisson ex Ralfs.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
03AE9874FFEDFFA8FF3EFB98FDC405DB.taxon	distribution	Distribution: Cosmopolitan.	en	Adam, Chaidir, Kenins, Alex, Prabowo, Danang A. (2025): Diversity and new records of desmids (Zygnematophyceae, Charophyta) in Central Kalimantan, Indonesia. Phytotaxa 691 (2): 125-150, DOI: 10.11646/phytotaxa.691.2.2, URL: https://doi.org/10.11646/phytotaxa.691.2.2
