taxonID	type	description	language	source
03A6CA01DB1CFFCCFF6CEA4EFD404936.taxon	materials_examined	Holotype (icon!): Biecheler (1952: fig. XXXIV, illustrating the plate tabulation). Type locality: Étang de Thau, Occitania, Mediterranean France.	en	Gu, Haifeng, Mertens, Kenneth N. (2025): Bysmatrum biechelerae Haifeng Gu & K. N. Mertens, sp. nov. (Peridiniales, familia incertae sedis, Dinophyceae). Notulae Algarum 361: 1-2, DOI: 10.5281/zenodo.16760989
03A6CA01DB1CFFCCFF6CEA4EFD404936.taxon	description	Description: Thecate dinoflagellate with a pentagonal cell-shape, 45 – 60 μm in length. Yellow-green elongate chloroplasts. Eyespot present. Hypothecal, sausage-shaped nucleus. Reticulated thecal plates. Growth bands can be present. Trapezoidal shape of apical pore complex. Kofoidian plate formula is Po, X, 4 ʹ, 3 a, 7 ʹʹ,? C,? S, 5 ʹʹʹ, 2 ʹʹʹʹ. Second anterior intercalary plate does not contact third anterior intercalary plate, as for the genus. First anterior intercalary plate quadrangular, second anterior intercalary plate hexagonal, and third anterior intercalary plate pentagonal. Two to three antapical spines present on 1 ʹʹʹ, 5 ʹʹʹ, 2 ʹʹʹʹ. Cingular displacement 1.5 – 2.0. Sulcus widens towards the antapex. Based upon Biecheler (1952: 59 – 63).	en	Gu, Haifeng, Mertens, Kenneth N. (2025): Bysmatrum biechelerae Haifeng Gu & K. N. Mertens, sp. nov. (Peridiniales, familia incertae sedis, Dinophyceae). Notulae Algarum 361: 1-2, DOI: 10.5281/zenodo.16760989
03A6CA01DB1CFFCCFF6CEA4EFD404936.taxon	etymology	Etymology: named for Berthe Biecheler (1901 – 1939) of the Station Biologique de l’Université de Montpellier à Sète, France; see Moestrup & Enevoldsen (2019) for an account of her life and premature demise. Her thesis work was published posthumously in 1952 (Biecheler, 1952).	en	Gu, Haifeng, Mertens, Kenneth N. (2025): Bysmatrum biechelerae Haifeng Gu & K. N. Mertens, sp. nov. (Peridiniales, familia incertae sedis, Dinophyceae). Notulae Algarum 361: 1-2, DOI: 10.5281/zenodo.16760989
03A6CA01DB1CFFCCFF6CEA4EFD404936.taxon	description	Registration: http: // phycobank. org / 105199	en	Gu, Haifeng, Mertens, Kenneth N. (2025): Bysmatrum biechelerae Haifeng Gu & K. N. Mertens, sp. nov. (Peridiniales, familia incertae sedis, Dinophyceae). Notulae Algarum 361: 1-2, DOI: 10.5281/zenodo.16760989
