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Diversity of cyanobacterial morphotypes from desert crusts. (A and B) Details of trichome morphology of M. vaginatus; (C) Chlorogloeopsis sp., enrichment culture from Nostoc-like field colonies; (D) Nostoc cells and short filaments after incubation and disruption of natural sample; (E) Scytonema sp. after incubation of natural sample; (F and G) cyanobacterial trichomes belonging to the “Xeronema” cluster (Phormidium and Schizothrix). Bars, 4 μm (A, B, F, and G) and 8 μm (C, D, and E).
