image_list image_listE

Gamophyceae: Zygnematales: Desmidiaceae

 Arthrodesmus octocornis
(Ehrenberg ex Ralfs) West et G.S. West
= Xanthidium octocorne Ehrenberg ex Ralfs 1848 (The Freshwater Algal Flora of the British Isles 2002)
= Octacanthium Compère 1996

Arthrodesmus octocornis Genus: Cell body small, length = width, strong constriction at its center; semicells inverted triangular, ellipsoidal, rectangular, etc. in shape; straight or slightly curved spiny projections at each corner; one pyrenoid in each semicell; cell wall smooth (Illustrations of The Japanese Fresh-water Algae, 1977).
Species:

Arthrodesmus octocornis Ehrenberg, cell body μm long, μm wide, L/W=, isthmus μm wide, x 640, No.11, Kannon-numa Forest Park (pond), Shimogo town, Fukushima Pref., Japan, November 15, 2008, by Y. Tsukii
Arthrodesmus 31 μm Arthrodesmus 63 μm Arthrodesmus 94 μm; x 640
Arthrodesmus octocornis Arthrodesmus octocornis

Images of collecting locality: No.11, Kannon-numa Forest Park (pond/marsh), Shimogo town, Fukushima Pref., Japan, November 15, 2008, by Y. Tsukii

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