image_list image_listE

Gamophyceae: Zygnematales: Desmidiaceae

Euastrum subalpinum
Messikommer var. subalpinum

Euastrum Genus: Variable in shape and in size; mostly longer than wide; strong constriction at center; semicell pyramid-shaped, apically flattened with indentation (or notch, some species lack this notch); laterally straight or wavy or indented; one chloroplast in each semicell; one pyrenoid for each chloroplast (Illustrations of The Japanese Fresh-water Algae, 1977).
Subgenus: Entomum (Apical area deeply indented or notched)
Section: Excisa (Cell surface granulated or dented; apical area with spiny projections)

Species:


Euastrum subalpinum Messikommer var. subalpinum, cell body 21 μm long, 18 μm wide, L/W=1.2, isthmus 5 μm wide, x 640, No.6, Omine-numa (pond/marsh), Omine, Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, April 15, 2007 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Euastrum subalpinum Euastrum subalpinum

Images of collecting locality: No.6, Omine-numa (pond/marsh), Omine, Minakami town (formerly Tsukiyono town), Gunma Pref., Japan, April 15, 2007 by Y. Tsukii


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