https://www.protisten.de/home-new/algae-green-colored-2-desmidiaceae-cosmarium/cosmarium-pyramidatum-var-convexum/
Cosmarium pyramidatum var. convexum - Protisten.de
Aug 24, 2026 - Observation on Cosmarium pyramidatum var. convexum (Archaeplastida, Chloroplastida, Streptophyta, Zygnematophyceae, Zygnematophycidae, Desmidiales,...
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