Heterothrix antarctica Broady 1976
Publication Details
Heterothrix antarctica Broady 1976: 393, fig. 3
Published in: Broady, P.A. (1976). Six new species of terrestrial algae from Signy island, South Orkney Islands, Antarctica. British Phycological Journal 11: 387-405.
Request PDFType Species
The type species (lectotype) of the genus Heterothrix is Heterothrix exilis (Klebs) Pascher.
Status of Name
This name is currently regarded as a synonym of Xanthonema antarcticum (Broady) Ettl & Gärtner.
Type Information
Type locality: Signy Island, South Orkney Islands, Antarctica; (Broady 1976: 393) Holotype: fig. 3 a-m: 1972; terrestrial mosses in a wet, acid habitat; Cambridge Collection of Algae and Protozoa; Culture No. 836/6 (Broady 1976: 393)
Origin of Species Name
Adjective (Latin), of or pertaining to the Antarctic (Stearn 1973).
Description
Long, multicellular flexuous filaments, in young cultures without constrictions at the crosswalls.
Each cell with a single, yellow-green, parietal, plate-like chromatophore covering about
half the inner cell wall. Dividing cells with two chromatophores before formation of the
transverse wall. Chromatophores equal to cell length in young filaments but situated centrally
in cells of older filaments. Oil globules often present particularly in older cultures. Filament
width 3-4.5 µm, cell length 3.5-9 µm in young, and up to 18 µm in old cultures. In old filaments
the transverse walls sometimes concavo--convex. Akinetes readily formed in old cultures,
usually spherical, 3.5-10 µm, rarely 15 µm diam., often with a thickened wall covered with
short spines.
Created: 26 April 2002 by M.D. Guiry.
Last updated: 12 February 2022
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Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=44151
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 12 February 2022. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 27 April 2024
