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Gamophyceae: Desmidales: Mesotaeniaceae
(Charophyceae: Zygnematales: Mesotaeniaceae)

 Cylindrocystis cushleckae
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Syn. C. brebissonii var. minor W. et G.S. West

Penium cylindrus Genus: Two chloroplasts with axis and laminae structure; axis short, laminae also short making the chloroplasts star-shaped
Species: Cell body cylindrical, very small, not broader than 10 μm; chloroplasts with longitudinal, twisting ridges (Coesel & Meesters, 2007).
Similar genus -->> Zygnema; Penium; Mesotaenium;

Cylindrocystis cushleckae (formerly, C. brebissonii var. minor) ?, cell body 35 μm long, 9 μm wide, L/W=3.9, x 640, Imou bog, Toyohashi city, Aichi Pref., Japan, September 11, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Penium

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