Botrydiopsis constricta Broady 1976
Publication Details
Botrydiopsis constricta Broady 1976: 388, figs 1, 2
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 (holotype) of the genus Botrydiopsis is Botrydiopsis arhiza Borzì.
Status of Name
This name is of an entity that is currently accepted taxonomically.
Type Information
Type locality: Signy Island, South Orkney Islands, Antarctica; (Broady 1976: 388) Holotype: figs 1 a-s, 2 a-q: 1972; soil and moss; Cambridge Collection of Algae and Protozoa; Culture No. 806/4 (Broady 1976: 388)
Origin of Species Name
Adjective A (Latin), constricted.
Description
Adult cells usually spherical, or broadly ellipsoidal, single, up to 42 µm diam., majority of
larger cells about 25 µm diam. Smooth, thin cell wall, occasionally with lens shaped thickenings.
Large cells with many chromatophores, usually spindle-shaped, lacking pyrenoids, mostly
parietal though often some either project into the cell or are entirely in the interior. Young cells
up to 10 µm diam. with a small number of parietal, plate-like chromatophores. Adult cells
multinucleate with the nuclei in the centre of the cell. Oil globules often present. Occasionally,
i n old cultures, individual cells surrounded by a stratified gelatinous sheath. Multiplication by
aplanospores, zoospores and vegetative division. Aplanospores usually spherical, 3.5-6 µm
diam., occasionally ellipsoidal to almost cylindrical with one, two or rarely three or four
chromatophores and a single nucleus. Zoospores, 5-7 × 2-3 µm, naked, unequally biflagellate,
with a single chromatophore containing a stigma; usually released in large numbers by the
rupture of the sporangium wall. Vegetative division most frequently seen in old cultures.
Spherical cells, usually greater than 20 µm diam., becoming broadly ellipsoidal to almost
cylindrical, the cells constricting and a transverse wall forming across the constriction thus
cutting off two daughter cells of equal or unequal sizes. A process resembling budding also
observed giving rise to two unequal daughter cells. Cells in the process of vegetative division
displaying many irregular shapes.
Created: 20 January 2003 by M.D. Guiry.
Last updated: 09 February 2012
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Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=57900
Citing AlgaeBase
Cite this record as:
G.M. Guiry in Guiry, M.D. & Guiry, G.M. 09 February 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 20 April 2024
