image_list image_listE

Gamophyceae: Desmidales: Desmidaceae or Peniaceae
(Charophyceae: Zygnematales: Desmidaceae)

Penium cylindrus
(Ehrenberg) Brébisson var. cylindrus

Penium cylindrus Species [ var. cylindrus ]: Cell body cylindrical, both ends truncated with rounded corners, (48-56)-58 μm long, 8-(11-13)-21 μm wide, L/W=5.0; cell wall dotted, brownish in color when aged, bands present.
[ var. cuticulare ]: Smaller than var. cylindrus, 19-34 μm long, 8-10 μm wide, L/W=3; (Illustrations of The Japanese Fresh-water Algae, 1977).

Penium cylindrus (Ehrenberg) Brébisson var. cylindrus cell body 50 μm long, 15 μm wide, L/W=3.3, x 640, No.2, Shijuhachi-ike (pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, October 9, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Penium cylindrus Penium cylindrus

Images of collecting locality: No.4, Shijuhachi-ike (marsh pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, October 9, 2006 by Y. Tsukii

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