Micrasterias C.A. Agardh

Cells are large, flat approximately circular, with a deep median incision. Semicells are divided into a polar lobe and two lateral lobes which may be divided again. The large beautiful members of this genus have been the object of much research. (Croasdale, H. & Flint, E. 1986. Flora of New Zealand Desmids I. - Wellington Gov. Print.)
Micrasterias apiculata (Ehr.) Menegh. ex Ralfs
Dimensions: 200–270 µm, B. 160–230 µm. Isthmus 35–40 µm. Coesel 1985, Lenzenweger 1996, Ruzicka 1981.

Micrasterias conferta Lund.
Dimensions: L. 80–100 µm, B. 75–90 µm. Isthmus 28–30 µm. Lenzenweger 1996, Ruzicka 1981.

Micrasterias rotata (Grev.) Ralfs ex Ralfs
Dimensions: L. 200–300 µm, B. 190–270 µm. Isthmus 30–40 µm. Lenzenweger 1996, Ruzicka 1981.

Micrasterias thomasiana Arch.
Dimensions: L. 200–250 µm, B. 170–220 µm. Isthmus 20–33 µm. Coesel 1985, Lenzenweger 1996, Ruzicka 1981.

Micrasterias truncata Corda ex Breb.
Dimensions: L. 80–120 µm, B. 80–100 µm. Isthmus 15–30 µm. Coesel 1985, Lenzenweger 1996, Ruzicka 1981.