image_list image_listE

Gamophyceae: Zygnematales: Desmidiaceae

Cosmarium thwaitesii
Ralfs

Cosmarium thwaitesii Species: Cell body 58-75 μm long, 26.5-31 μm wide, L/W=2-2.5, isthmus 20-29 μm wide; semicells broad ellipsoidal or ovoidal, apex broad circular or narrowly flattened; cell wall finely dotted; band-form chloroplasts aligned along inner cellwall (Illustrations of The Japanese Fresh-water Algae, 1977).
Similar species -->> C. cucurbita; C. cucurbitinum; C. diplosporum; C. globosum; C. oblongum;


Cosmarium thwaitesii Ralfs, cell body 39 μm long, 24 μm wide, L/W=1.6, isthmus 21.5 μm wide, x 640, No.4, Shijuhachi-ike (pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 17, 2007 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Cosmarium thwaitesii Cosmarium thwaitesii Cosmarium thwaitesii

Images of collecting locality: No.4, Shijuhachi-ike (pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 17, 2007 by Y. Tsukii


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