Family: Unicells or cell aggregates cubic or irregular in shape; cell body without hairly projections (Introduction to the Freshwater Algae, 1999).
Genus: Subaerial algae or an algal component of lichens; colonies as cell aggregates or sometimes form filaments in part; cell body spherical or elongated ellipsoidal; with a single chloroplast plate-like (Illustrations of The Japanese Fresh-water Algae, 1977).
D olivaceus ?
Protococus ?
6-12 μm φ
Nasu-Shiobara st.
Tochigi, 2001
D olivaceus ?
Protococus ?
6-12 μm φ
Kobe
Hyogo, 2001
D olivaceus ?
Protococus ?
8-16 μm φ
Kuroiso
Tochigi, 2001
D olivaceus ?
Protococus ?
6-12 μm φ
Sayama Natural p.
Saitama, 2001
D olivaceus ?
Protococus ?
4-8 μm φ
Toneri Park
Tokyo, 2001
D olivaceus ?
Protococus ?
μm φ
Kashiwa
Chiba, 2002
