Geniculus G.W.Prescott, 1967

Holotype species: Geniculus gatunensis Prescott

Original publication and holotype designation: Prescott, G.W. (1967 '1966'). Algae of the Panama Canal and its tributaries - II. Conjugales. Phykos 5: 1-49, 12 pls.

Description: Cells small, short-cylindric with truncate ends (10-12 um long, 6-8 µm ), bent (geniculate) in middle, with 1-2 fine gelatinous spines on corners of one or both apices (or, in one cell illustrated by author, from middle of cell). Cells in colonies, 8-16 cells within common, triangular, sheath. One or two chloroplasts per cell, axial and stellate with central pyrenoid. Nothing known regarding reproduction in this genus. Placement in Mesotaeniaceae considered tentative by Prescott; confirmation of taxonomic position awaits further studies. Geniculus known only from type locality, Gigante Bay, Gatun Lake (Panama Canal). Cells small, short-cylindric with truncate ends (10-12 um long, 6-8 µm ), bent (geniculate) in middle, with 1-2 fine gelatinous spines on corners of one or both apices (or, in one cell illustrated by author, from middle of cell). Cells in colonies, 8-16 cells within common, triangular, sheath. One or two chloroplasts per cell, axial and stellate with central pyrenoid. Nothing known regarding reproduction in this genus. Placement in Mesotaeniaceae considered tentative by Prescott; confirmation of taxonomic position awaits further studies. Geniculus known only from type locality, Gigante Bay, Gatun Lake (Panama Canal).

Information contributed by: J.F. Gerrath. The most recent alteration to this page was made on 2013-05-07 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.

Verification of Data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=47154

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 07 May 2013. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 19 April 2024