Original paper

Cryptomonas ovata Ehrenberg (Cryptophyceae) and some related species

Javornický, Pavel

Algological Studies/Archiv für Hydrobiologie, Supplement Volumes No. 110 (2003), p. 43 - 65

published: Nov 1, 2003

DOI: 10.1127/1864-1318/2003/0110-0043

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Abstract

Cryptomonas ovata Ehrenb., the type species of the genus Cryptomonas, is a rather sizeable species (31-45-80? μm long) with conspicuously crosswise flattened cells. Two varieties have been discerned: C. ovata var. ovata. with dorsoventrally flattened cells and C. ovata var. splendida (Czosnowski) comb. nova, flattened laterally. A smaller species (20-24 μm) of similar cell shape, flattened dorsoventrally, has been identified with Cryptomonas tatrica Czosn. Three other species of similar morphology have been studied and presented, namely Cryptomonas obovata Skuja, Cryptomonas cornuta sp. nova, and Cryptomonas phaseolus Skuja.The electron-microscopic (EM) research works with various materials labelled erroneously as Cryptomonas ovata which are in fact C. pyrenoidifera Geitler (syn. C. ovata var. palustris Pringsheim), C. phaseolus Skuja, or some other species. Consequently, the EM characteristics ascribed to C. ovata belong to other species.

Keywords

cryptophyceae • cryptomonas ovata • species related with c. ovata • morphology • light microscopy • variability • taxonomy • new species • new nomenclatural combinations • erroneous identification