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Gamophyceae: Zygnematales: Desmidiaceae

Pleurotaenium ehrenbergii
(Brébisson) de Bary var. ehrenbergii

Pleurotaenium ehrenbergii Species [var. ehrenbergii]: Cell body medium in size, 220-739 μm long, 15-45 μm wide, L/W=11-20; semicells swelled at base, 7-10 wart-like projections circulary arranged arround both ends; chloroplasts band-form, with many pyrenoids; cellwall dotted.
[var. curtum]: Cell body short, 170-288 μm long, 17-32 μm, L/W=8-11.
[var. undulatum]: Lateral margins wavy, 290-700 μm long, 21-37 μm.
[var. crenulatum]: Semicells with two swellings at base, lateral margins slightly convex, 494-875 μm long, 37-58 μm.
[var. elongatum]: Cell body elongated, 390-575 μm long, 18-26 μm, L/W=19-25
[var. attenuatum]: (Illustrations of The Japanese Fresh-water Algae, 1977).


Pleurotaenium ehrenbergii (Brébisson) de Bary var. ehrenbergii, cell body 680 μm long, 34 μm wide, L/W=20, x 100, x 200, x 400, x 640, Azami-ike (pond), Norikura highland, Azumi, Matsumoto city (formerly Azumi village), Nagano Pref., Japan, June 8, 2006 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Pleurotaenium ehrenbergii Pleurotaenium ehrenbergii Pleurotaenium ehrenbergii Pleurotaenium ehrenbergii

Images of collecting locality: Azami-ike (pond), Norikura highland, Azumi, Matsumoto city (formerly Azumi village), Nagano Pref., Japan, June 8, 2006 by Y. Tsukii


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