Genus: Thalli branched uniseriate filamentous; attached by a basal cell with a small holdfast; cells cylindrical
or sometimes subclavate; terminal cells with bluntly rounded end; chloroplasts a single, parietal plate-like;
without pyrenoids (Photomicrog. Fresh-w. Alg. 4, 1985).
Images of collecting locality:
marsh pond near Chigo-ike marsh (or Yakebitai marsh) at the top of Yakebitai mountain, Shiga highland (Oku-shiga highland), Yamanouchi town, Nagano Pref., Japan, October 9, 2006 by Y. Tsukii