image_list image_listE

Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum forficulatum
var. verrucosum Grönblad

Staurastrum forficulatum Subgenus: lacks arm-like projections
Section [ Stellatiformes ]: Semicells with lines of spines (Illustrations of The Japanese Fresh-water Algae, 1977)
Species [ var. forficulatum ]: Cell body medium in size, 40-47.6 μm long, 37-60 μm wide (excluding spines), marginal projections present at both anterior and posterior sides of semicells, corner projections with dichotomous spines.
[ var. verrucosum ]: Cell body 39-45 μm long, 37-42 μm wide (excluding spines) corner projections with trichotomous spines (Illustrations of The Japanese Fresh-water Algae, 1977)
Similar species -- >> S. sexangulare;

Staurastrum forficulatum var. verrucosum Grönblad (or S. hantzii var. japonicum Roy et Bisset ?), cell body μm long, μm wide, L/W=, isthmus μm wide, x 640, No.2, Numappara marsh, Nasu-shiobara city (formerly Kuroiso city), Tochigi Pref., Japan, September 3, 2007 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum forficulatum Staurastrum forficulatum Staurastrum forficulatum Staurastrum forficulatum

Images of collecting locality: No.2, Numappara marsh, Nasu-shiobara city (formerly Kuroiso city), Tochigi Pref., Japan, September 3, 2007 by Y. Tsukii

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