Batrachospermum Roth, 1797

Holotype species: Conferva gelatinosa Linnaeus

Currently accepted name for the type species: Batrachospermum gelatinosum (Linnaeus) De Candolle

Original publication and holotype designation: Roth, A.W. (1797). Bemerkungen über das Studium der cryptogamischen Wassergewächse. pp. [1]-109, [+1 Druckfehler]. Hannover: bei den Gebrüdern Hahn.

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Description: Thalli monoecious or dioecious; olive-drab, sometimes brownish; consistency mucilaginous, branching irregular; whorls well developed; cortical filaments of the main axis with cylindrical cells; primary fascicles with ellipsoidal or fusiform cells; secondary fascicles few and sparse; spermatangia typically at the tips of primary, less often of secondary fascicles, but can be at the tips of involucral filaments of the carpogonial branches, spherical to sub-spherical; carpogonial branches 40.5–65.9 ?m in length, composed of cells similar to the fascicles, straight, developing from the periaxial, proximal cells of primary fascicles, and occasionally from distal cells of primary fascicles; involucral filaments, short or long, composed of cylindrical or ellipsoidal cells; carpogonia with sessile, rarely stalked, clavate, lanceolate, or ellipsoidal trichogynes; carposporophytes pedunculate, spherical, inserted within the whorls or exerted, small; gonimoblast filaments densely arranged, composed of 2–4 barrel-shaped to cylindrical cells; carposporangia spherical to obovoidal.

Information contributed by: Vis & Necchi (2021: 157-158). The most recent alteration to this page was made on 2022-04-21 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

Gender: This genus name is currently treated as neuter.

Most recent taxonomic treatment adopted: Sheath, R.G. (2003). Red Algae. In: Freshwater Algae of North America, Ecology & Classification. (Wehr, J.D. & Sheath, R.G. Eds), pp. 197-224. San Diego: Academic Press.

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Contributors
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in CD format. These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above. The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.

Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.

Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=42771

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 21 April 2022. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 21 November 2024