Nostoc humifusum Carmich. ex Bornet & Flahault Dataset United Kingdom Species Inventory (UKSI) Rank SPECIES Classification phylum Cyanobacteria class Cyanophyceae order Nostocales family Nostocaceae genus Nostoc species Nostoc humifusum Name Synonyms Nostoc calcicola Nostoc calcicola Bréb. Nostoc humifusum Homonyms Nostoc humifusum Carmich. ex Bornet & Flahault Nostoc humifusum