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PROPOSED NEW IDENTIFICATION CHARACTER FOR THE GENUS COLACIUM (EUGLENOPHYCEAE) 1
Author(s) -
Willey Ruth L.
Publication year - 1980
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.1980.tb03009.x
Subject(s) - biology , pyrenoid , genus , character (mathematics) , euglena , botany , basophilic , electron microscope , anatomy , optics , biochemistry , chloroplast , geometry , mathematics , gene , medicine , physics , pathology
Cells of the genus Colacium Ehrenberg can be distinguished with the light microscope from cells of the genus Euglena Ehrenberg by the presence of basophilic granules in the anterior tip of the Colacium cell which are clustered around the canal opening. The granules exhibit a biphasic pattern of osmiophilia in electron micrographs. Together with the occasionally obscure character of the paramyloncapped, inner pyrenoids, the granules should serve as a useful character to distinguish between the motile, flagellated cells of the two genera whether from laboratory cultures or from field collections of natural populations.