Calothrix parietina Thuret ex Bornet & Flahault
Prox. Lamellated sheath and basal heterocyst. In a warm spring. Near Snaefellsjökul, NW Iceland.
Date: 06 July 2011
Copyright: © C.F.Carter (chris.carter@6cvw.freeuk.com)
Image Reference: 20206
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