Euastrum insulare f. brasiliense Y.Kanetsuna 2004
Publication Details
Euastrum insulare f. brasiliense Y.Kanetsuna 2004: 163, figs 13, 14, 34, 35 (as 'var. silesiacum f. brasiliense')
Published in: Kanetsuna, Y. (2004). New and interesting desmids (Zygnematales, Chlorophyceae) collected from Brazil and Argentina. Phycological Research 52: 160-167, 47 figs.
Request PDFPublication date: June 2004
Type Species
The type species (lectotype) of the genus Euastrum is Euastrum ansatum Ehrenberg ex Ralfs.
Status of Name
This name is of an entity that is currently accepted taxonomically.
Type Information
Swamp, Transpantaneira, Mato-Grosso, Brazil; (Kanetsuna 2004: 163) Holotype: (Kanetsuna 2004: 163)
Origin of Species Name
Adjective (Latin), pertaining to islands, insular (Stearn 1973).
General Environment
This is a freshwater species.
Description
This form differs from var. silesiacum by having a smaller size, rounded basal margins, broad isthmus and a subapical scrobiculation instead of a protrusion on the face of the semicell. Cell length 17.9-19.4 µm, width 11.9-13.4 µm, breadth of isthmus 5.2-9 µm. This is a small Euastrum , with cells approximately 1.4-1.5 times longer than they are broad, slightly constricted in the middle, with sinus closed linearly. Semicells are truncate/pyramidal, apex is truncate, apical margin is scarecly retuse, apical angles are acutely rounded, and basal margins are rounded. Semicells have a subapical scrobiculation. In side view, semicells are elliptical, and the pole is rounded with a subapical scrobiculation on each lateral margin.
Similar Species
Euastrum insulare var. silesiacum f. minus Prescott & Scott (1945, p. 241, pl. 2, f. 15). Euastrum luetkemuelleri Borge (1918).
Created: 01 December 2004 by Sandy Lawson.
Last updated: 09 January 2019
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Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=65957
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 09 January 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 27 April 2024
