Quadrigula Printz, 1916

Holotype species: Quadrigula closterioides (Bohlin) Printz

Original publication and holotype designation: Printz, H. (1916). I. Die Chlorophyceen des südlichen Sibiriens und des Uriankailandes [Contributiones ad floram asiae interioris pertinentes.]. Kongelige Norske Videnskabernes Selskab Skrifter 1915(4): 1-59, pls I-VII.

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Description: Thalli colonial or rarely unicellular, comprised of 4-8-16 or more detached cells dispersed in mucilaginous envelope. Cells long-cylindrical or fusiform and parallel in sheath. Cells 7-45 x 1-8 µm, with smooth cell walls and pointed or rounded ends. Cells uninucleate; chloroplast single and parietal; pyrenoids apparently absent except in type species. Asexual reproduction by autospores, usually 4 (if 8, in two groups of 4 above each other) per sporangium, released by median rupture of cell wall. Flagellated stages and sexual reproduction unknown. Quadrigula planktonic or in littoral of lakes; reported from Europe, North America, Asia. Species distinguised based differences in cell size and shape. Quadrigula closely related to Ankistrodemus but differs in that cells remain attached in the latter genus.

Information contributed by: D. Garbary & F. Hindák. The most recent alteration to this page was made on 2022-11-14 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 feminine.

Most recent taxonomic treatment adopted: John, D.M. & Tsarenko, P.M. (2002). Order Chlorococcales. In: The Freshwater Algal Flora of the British Isles. An identification guide to freshwater and terrestrial algae. (John, D.M., Whitton, B.A. & Brook, A.J. Eds), pp. 327-409. Cambridge: Cambridge University 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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=43447

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 14 November 2022. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 23 November 2024