identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
2C7F9942FFC7FFD6FF213495FC84C020.text	2C7F9942FFC7FFD6FF213495FC84C020.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Sawia R. E. Romanov 2025	<div><p>Sawia R.E.Romanov, gen. nov.</p><p>Type: Sawia boldii (Sawa) R.E.Romanov, comb. nov., infra</p><p>Registration (of name): http://phycobank.org/105334</p><p>Registration (of type): http://phycobank.org/105333</p><p>Diagnosis: Sawia has acute end-cells of branchlets, terminal antheridia situated at tops of rays of furcate, i.e. non-monopodial, branchlets, although antheridia are formed mostly at bases of branchlet whorls. In contrast, Sphaerochara has no terminal antheridia; they are situated at nodes of monopodial branchlets and at bases of branchlet whorls. In comparison, Tolypella has blunt, rounded end-cells of branchlets and bipartite basal plates of oospores. Terminal placement of antheridia, the presence of non-monopodial branchlets, phylogenetic affinity, and, probably, the absence of gyrogonites allow delineation of Sawia and Sphaerochara . Acute end-cells, undivided basal plates of oospores, and phylogenetic affinity allow delineation of Sawia and Tolypella .</p><p>Etymology: The feminine genus noun honours Takashi Sawa (1929–2013), a Japanese charophytologist who described two species of this genus, critically describing and illustrating a key genus trait, terminal antheridia (Sawa, 1973).</p></div>	https://treatment.plazi.org/id/2C7F9942FFC7FFD6FF213495FC84C020	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Romanov, Roman Evgenevich	Romanov, Roman Evgenevich (2025): Sawia gen. nov., and new combinations in Sphaerochara (Characeae, Charophyceae). Notulae Algarum 367: 1-4
2C7F9942FFC7FFD7FF213020FC8DC761.text	2C7F9942FFC7FFD7FF213020FC8DC761.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Sawia canadensis (Sawa) R. E. Romanov 2025	<div><p>Sawia canadensis (Sawa) R.E.Romanov, comb. nov.</p><p>Basionym: Tolypella canadensis Sawa Journal of Phycology 9(4): 476, figs 10–15, 20–22, 1973.</p><p>≡ Sphaerochara canadensis (Sawa) Soulié-Märsche (in Schubert &amp; al.) Charophytes of Europe: 951, 2024</p><p>Holotype (Sawa 1973: 480): Ontario, Canada: Thunder Bay District: the shore of Lake Superior at Rossport Provincial Picnic Park, along Trans-Canada Hwy. (= Ont. Hwy. 17) 0. 2 mi east of Rossport, 20 July 1970, Sawa-Hotchkiss-Thorpe 70-7-20-3 (TRT in ROM).</p><p>Registration (of name): http://phycobank.org/105337</p></div>	https://treatment.plazi.org/id/2C7F9942FFC7FFD7FF213020FC8DC761	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Romanov, Roman Evgenevich	Romanov, Roman Evgenevich (2025): Sawia gen. nov., and new combinations in Sphaerochara (Characeae, Charophyceae). Notulae Algarum 367: 1-4
2C7F9942FFC6FFD7FF2136E0FC8DC48B.text	2C7F9942FFC6FFD7FF2136E0FC8DC48B.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Sawia stipitata (T. F. Allen) R. E. Romanov 2025	<div><p>Sawia stipitata (T.F.Allen) R.E.Romanov, comb. nov.</p><p>Basionym: Tolypella stipitata T.F.Allen Bulletin of the Torrey Botanical Club 10(10/11): 114, pl. 41, 1883.</p><p>≡ Tolypella intricata var. intricata f. stipitata (T.F.Allen) R.D. Wood Taxon 11: 23. 1962.</p><p>Holotype (Allen 1883: 115): USA: In a pond near Mt Carbon, Elk Range, western Colorado, USA, 1881, T. S. Brandegee (NY 00887624).</p><p>Registration (of name): http://phycobank.org/105338</p></div>	https://treatment.plazi.org/id/2C7F9942FFC6FFD7FF2136E0FC8DC48B	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Romanov, Roman Evgenevich	Romanov, Roman Evgenevich (2025): Sawia gen. nov., and new combinations in Sphaerochara (Characeae, Charophyceae). Notulae Algarum 367: 1-4
2C7F9942FFC6FFD7FF2135CFFAC7C224.text	2C7F9942FFC6FFD7FF2135CFFAC7C224.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Sphaerochara apiculata (A. Braun) R. E. Romanov 2025	<div><p>Sphaerochara apiculata (A.Braun) R.E.Romanov, comb. nov.</p><p>Basionym: Tolypella apiculata A.Braun in A.Braun &amp; Nordstedt Abhandlungen der Königlich Preussischen Akademie der Wissenschaften 1882(1): 98, figs 79–83, 1883.</p><p>≡ Tolypella intricata var. apiculata (A.Braun) R.D.Wood Taxon 11: 23, 1962.</p><p>Lectotype (designated by Wood &amp; Imahori 1965: 747): Chile: Chili, E. Bertero 3015, Herb. Montagne (PC).</p><p>Registration (of name): http://phycobank.org/105340</p><p>Note: The placement of antheridia, “generally lateral to oogonium”, indicated by Wood &amp; Imahori (1965: 747) for the lectotype and excellent drawings by Cáceres (1978) is a sufficient basis for transfer to Sphaerochara for this little-known species (see discussion in Blindow &amp; al., 2018).</p></div>	https://treatment.plazi.org/id/2C7F9942FFC6FFD7FF2135CFFAC7C224	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Romanov, Roman Evgenevich	Romanov, Roman Evgenevich (2025): Sawia gen. nov., and new combinations in Sphaerochara (Characeae, Charophyceae). Notulae Algarum 367: 1-4
2C7F9942FFC6FFD4FF213324FC3CC744.text	2C7F9942FFC6FFD4FF213324FC3CC744.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Sphaerochara californica (A. Braun) R. E. Romanov 2025	<div><p>Sphaerochara californica (A.Braun) R.E.Romanov, comb. nov.</p><p>Basionym: Tolypella californica A.Braun in A.Braun &amp; Nordstedt Abhandlungen der Königlich Preussischen Akademie der Wissenschaften 1882(1): 99, figs 84–87, 1883.</p><p>Holotype (Braun &amp; Nordstedt 1883: 100): USA: Marin County [“Maria Counts (?)”], California under willows in slow-flowing streams, 27. März 1865, H. Bolander, comm. Dr Engelmann, Aug. 1869 (B? not located, probably lost).</p><p>Lectotype (icons! designated here): Braun &amp; Nordstedt 1883: figs 84–87.</p><p>Registration (of name): http://phycobank.org/105472</p><p>Registration (of lectotype): http://phycobank.org/105341</p><p>Note: The combination of monopodial sterile branchlets bearing a single node with rays, deciduous coronula, and enlarged upper parts of spiral cells, i.e. both traits characteristic of Tolypella sensu stricto, illustrated by Braun and the similarity to T. nidifica (O.F.Müller) A.Braun noted by Braun is not consistent with the decision by Wood who placed T. californica pro parte to synonyms of T. intricata var. intricata f. intricata, f. prolifera (Ziz ex A.Braun) R.D.Wood, and f. spicata R.D.Wood (Wood 1962) or T. intricata var. intricata f. intricata, and f. prolifera (Wood &amp; Imahori, 1965), i.e. recognizing it as a collective taxon. However, the description by Braun was based on one gathering from California, and he indicated a requirement for the study of unfragmented plants, not available in the original material. Accordingly, the evidence for Wood’s decision is unclear. It appears that it was not based on re-study of the original material and, probably, it is a result of his study of other Californian specimens of different taxa labelled as T. californica by T. F. Allen according to labels of the specimens studied by Wood (1965). Wood listed the specimen from NY as having almost the same data as the original material of T. californica except for the date and month of collection (Wood, 1965: 741). Wood recognised this specimen as T. intricata but illustrated it with an indication of T. californica as a synonym (Wood &amp; Imahori, 1964: icon 388). However, coronulae of oogonia appear persistent, and the presence or absence of swelling of tips of the oogonial spiral cell is unclear according to the drawings of this specimen. Considering the absence of any other part of the original material than the protologue the decision by Wood appears to be unacceptable and species should be kept separately until new topotype material can be examined.</p></div>	https://treatment.plazi.org/id/2C7F9942FFC6FFD4FF213324FC3CC744	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Romanov, Roman Evgenevich	Romanov, Roman Evgenevich (2025): Sawia gen. nov., and new combinations in Sphaerochara (Characeae, Charophyceae). Notulae Algarum 367: 1-4
2C7F9942FFC5FFD4FF213604FC8DC419.text	2C7F9942FFC5FFD4FF213604FC8DC419.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Sphaerochara ramosissima (W. Perez, J. D. Hall, McCourt & Karol) R. E. Romanov 2025	<div><p>Sphaerochara ramosissima (W.Pérez, J.D.Hall, McCourt &amp; Karol) R.E.Romanov, comb. nov.</p><p>Basionym: Tolypella ramosissima W.Pérez, J.D.Hall, McCourt &amp; Karol Journal of Phycology 9 (4): 785, fig 5, 2014.</p><p>Holotype (Pérez &amp; al. 2014: 786): NY 01475130.</p><p>Registration (of name): http://phycobank.org/105342</p></div>	https://treatment.plazi.org/id/2C7F9942FFC5FFD4FF213604FC8DC419	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Romanov, Roman Evgenevich	Romanov, Roman Evgenevich (2025): Sawia gen. nov., and new combinations in Sphaerochara (Characeae, Charophyceae). Notulae Algarum 367: 1-4
2C7F9942FFC5FFD5FF213539FA9EC296.text	2C7F9942FFC5FFD5FF213539FA9EC296.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Sphaerochara spicata (R. D. Wood) R. E. Romanov 2025	<div><p>Sphaerochara spicata (R.D.Wood) R.E.Romanov, comb. nov.</p><p>Basionym: Tolypella intricata var. intricata f. spicata R.D.Wood Taxon 11: 23, 1962.</p><p>Holotype (Wood 1962: 23): USA: Calif [ornia], no date, [J. W.] Blankinship (NY 00887630).</p><p>Registration (of name): http://phycobank.org/105343</p><p>Note: “ Tolypella spicata ” (R.D.Wood) R.D. Wood (1965: 781), nom. inval. was described as Tolypella intricata [ var. intricata] f. spicata R.D.Wood from North America. Wood (1965) proposed a new combination and species rank for T. spicata in the “Microspecies appendix” without referring to the place of valid publication of the basionym (ICN Art. 41.5, Shenzhen Code, Turland &amp; al. 2018), as well without citation of basionym rendering his nomenclatural act invalid. Thus, the new combination is suggested and species status is validated here.</p><p>I am grateful to Thomas Gregor and to Michael D. Guiry for suggesting improvements to this paper.</p><p>Allen, T.F. (1883). Notes on the American species of Tolypella. Bulletin of the Torrey Botanical Club 10 (10/ 11): 109-117.</p><p>Blindow, I., Schories, D. &amp; Schubert, H. (2018). Charophyceae of Chile – taxonomy and distribution. Part 2. Subfamily Nitelleae. Nova Hedwigia 107 (1- 2): 49-90.</p><p>Braun, A. &amp; Nordstedt, C.F.O. (1883). Fragmente einer Monographie der Characeen von Hrn. A. Braun. Nach den hinterlassenen Manuscripten A. Braun's herausgegeben von Hrn. Dr. Otto Nordstedt. Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin 1882 (1): 1- 211, taf.1-7.</p><p>Cáceres, E.J. (1978). Contribución al conocimiento de los cárofitos del centro de Argentina. Boletín de la Academia Nacional de Ciencias, Córdoba 52: 315-372.</p><p>Daily, F.K. (1969). Some Late Glacial charophytes compared to modern species. Proceedings of the Indiana Academy of Science 1968, 78: 406-412.</p><p>Feist, M. &amp; Grambast-Fessard, N. (1991). The genus concept in Charophyta: evidence from Palaeozoic to Recent. In: Calcareous algae and stromatolites. (Riding, R. Ed.), pp. [189]-203. Berlin, Heidelberg, New York, London, Paris, Tokyo, Hong Kong, Barcelona: Springer-Verlag.</p><p>Holzhausen, A., Nowak, P., Ballot, A., Becker, R., Gebert, J., Gregor, T., Karol, K.G., Lambert, E., Pérez, W., Raabe, U., Schneider, S.C., Stewart, N., van de Weyer, K., Wilde, V. &amp; Schubert, H. (2023). Plastid DNA sequences and oospore characters of some European taxa of Tolypella section Tolypella (Characeae) identify five clusters, including one new cryptic Tolypella taxon from Sardinia, but they do not coincide with current morphological descriptions. Frontiers in Plant Science 14, 1096181.</p><p>Pérez, W., Casanova, M.T., Hall, J.D., McCourt, R.M. &amp; Karol, K.G. (2017). Phylogenetic congruence of ribosomal operon and plastid gene sequences for the Characeae with an emphasis on Tolypella (Characeae, Charophyceae). Phycologia 56 (2): 230-237.</p><p>Pérez, W., Hall, J.D., McCourt, R.M. &amp; Karol, K.G. (2014). Phylogeny of North American Tolypella (Charophyceae, Charophyta) based on plastid DNA sequences with a description of Tolypella ramosissima sp. nov. Journal of Phycology 50 (5): 776-789.</p><p>Romanov, R.E., Nikulin, V.Yu., Vishnyakov, V.S., Tsegmid, B., Efremov, A.N., Zhakova, L.V. &amp; Gontcharov, A.A. (2024). Tolypella mongolica (Charophyceae, Characeae): A new dioecious charophyte species from the center of Eurasia and implications for charophyte taxonomy, including the validation of T. porteri and the new combination for T. jwalae. Phytotaxa 659 (1): 24-40.</p><p>Saber, A.A., Gontcharov, A.A., Nikulin, A.Y., Nikulin, V.Y., Rayan, W.A. &amp; Cantonati, M. (2021). Integrative taxonomic, ecological and genotyping study of charophyte populations from the Egyptian Western-Desert Oases and Sinai Peninsula. Plants 10, 1157.</p><p>Sawa, T. (1973). Two new species of Tolypella (Characeae) from North America. Journal of Phycology 9 (4): 472-482.</p><p>Schubert, H., Blindow, I., Nat, E., Korsch, H., Gregor, T., Denys, L., Stewart, N., van de Weyer, K., Romanov, R. &amp; Casanova, M.T. (Eds.) (2024). Charophytes of Europe. Cham: Springer Nature Switzerland AG. pp. [i]–xiii, [1]–1144.</p><p>Soulié-Märsche, I. (1989). Étude comparée de gyrogonites de charophytes actuelles et fossiles et phylogénie des genres actuels. Thèse d'État. pp. [1]–237. Millau: Imprimerie des Tilleuls.</p><p>Turland, N.J., Wiersema, J.H., Barrie, F.R., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Knapp, S., Kusber, W.-H., Li, D.-Z., Marhold, K., May, T.W., McNeill, J., Monro, A.M., Prado, J., Price, M.J. &amp; Smith, G.F. (Eds.) (2018) International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. Regnum Vegetabile 159. Koeltz Botanical Books, Glashütten.</p><p>Wood, R.D. (1962). New combinations and taxa in the revision of Characeae. Taxon 11: 7-25.</p><p>Wood, R.D. (1965). A revision of the Characeae. In: Wood, R.D. &amp; Imahori, K. (Eds.) A revision of the Characeae, 1, J. Cramer, Weinheim, pp. i–xxiv, 1–904.</p><p>Wood, R.D. &amp; Imahori, K. (1964). Iconograph of the Characeae. In: Wood, R.D. &amp; Imahori, K. (Eds.) A revision of the Characeae, 2, J. Cramer, Weinheim, pp. v– xv, 1–5, icons 1–395.</p></div>	https://treatment.plazi.org/id/2C7F9942FFC5FFD5FF213539FA9EC296	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Romanov, Roman Evgenevich	Romanov, Roman Evgenevich (2025): Sawia gen. nov., and new combinations in Sphaerochara (Characeae, Charophyceae). Notulae Algarum 367: 1-4
