image_list image_listE

Gamophyceae: Zygnematales: Desmidiaceae

 Cosmarium portianum
W. Archer var. portianum

Cosmarium portianum Section [ Ornatae ]: Semicells circular, ellipsoid, reniform; cell surface granulated or spiny (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Cell body (52)-66-79 μm long, (42)-57-60 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977).

Cosmarium portianum W. Archer var. portianum, cell body 42 μm long, 31 μm wide, L/W=1.4, isthmus 12 μm wide, x 640, Ohnuma (a pond at Ohnuma enchi), Nasu-shiobara city (formerly Shiobara town), Tochigi Pref., Japan, April 1, 2007, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Cosmarium portianum Cosmarium portianum

mages of collecting locality: Ohnuma (a pond at Ohnuma enchi), Nasu-shiobara city (formerly Shiobara town), Tochigi Pref., Japan, April 1, 2007, by Y. Tsukii

Please click on images for viewing enlarged.
Copyright Protist Information Server