image_list image_listE

Chlorophyceae: Volvocales: Spondylomoraceae
Volvocida: Volvocina: Volvocidae

 Pyrobotrys casinoensis
P. casinoensis (Playfair) Silba 1972 (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000)
P. casinoënsis (Playfair) Silva 1972 (Süßwasserflora von Mitteleuropa 9, Chlorophyta I, 1983).
Syn.: P. gracilis (Korschikoff) Korschikoff 1938

Pyrobotrys Species: Colony of 8 or 16 cells, layered by 4-celled "chaplet", up to 45 (-58) μm long; cell body ovoid or pear-shaped, slightly asymmetrical, posteriorly narrowed, but not drown out, 10-25 μm long; cellwall thin; flagella 1.5 times longer than the cell body; chloroplast cup-shaped; stigma located around the backward-inclined area of the cell (Süßwasserflora von Mitteleuropa 9, Chlorophyta I, 1983).

Pyrobotrys casinoensis (Playfair) Silba 1972, cell body μm long, μm wide, x 640, river bank of Arakawa, near Doman-green Park, Nishi-Urawa, Saitama Pref., Japan, November 2003 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Pyrobotrys casinoensis Pyrobotrys casinoensis Pyrobotrys casinoensis Pyrobotrys casinoensis

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