Ichthyocercus West & G.S.West, 1897

Holotype species: Ichthyocercus angolensis West & G.S.West

Original publication and holotype designation: West, W. & West, G.S. (1897). Welwitsch's African freshwater algae. Journal of Botany, British and Foreign 35: 1-7, 33-42, 77-89, 113-122, 172-183, 235-243, 264-272, 297-304, pls 365-369.

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Description: Cells solitary, elongate, subcylindrical, with shallow median constriction (isthmus) whre semicell walls overlap. Cell ends usually widened with retuse apical margin and stout spine (rarely two) on each angle. Cell wall with pores scattered or in parallel rows. Chloroplast one per semicell, axial, stellate in end view, with one to several pyrenoids (chloroplast structure of type species unknown). Nucleus at isthmus between chloroplasts. Asexual reproduction not studied; cell division and semicell morphogenesis characteristic of Cosmarium-type desmids assumed (see Cosmarium). Sexual reproduction known in two species. Zygospores globose to ellipsoidal; smooth walled or with a scrobiculate inner wall, surrounded by conjugation tube and empty gametangial walls. Ichthyocercus rare in lakes, ponds or swamps in Africa, Madagascar, Indonesia, Australia and South America.

Information contributed by: J.F. Gerrath. The most recent alteration to this page was made on 2013-09-12 by M.D. Guiry.

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

Most recent taxonomic treatment adopted: Guiry, M.D. (2013). Taxonomy and nomenclature of the Conjugatophyceae (=Zygnematophyceae). Algae. An International Journal of Algal Research 28: 1-29.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=43534

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 12 September 2013. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 24 April 2024