Family & Genus: With branching, anastomosing pseudopodia, mainly at extermities
(Illustrated Guide, 1985).
When inactive, rounded or ovoid; when active, expanded; 1 or more contractile vacuoles;
fresh water (Kudo, 1966).
Species:
Penardia sp. ?,
extended form (including pseudopodia) or more μm
x 200, x 400, x 640, Torinome Kasen park, Nasu-shiobara city (formerly Kuroiso city), Tochigi Pref., Japan, September 1998, by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640