Collema nigrescens var. ryssoleum Tuck.
- Dataset
- GBIF Backbone Taxonomy
- Rank
- VARIETY
- Published in
- (1866). Lichens of California (Berkeley): 34.
Classification
- kingdom
- Fungi
- phylum
- Ascomycota
- class
- Lecanoromycetes
- order
- Peltigerales
- family
- Collemataceae
- genus
- Collema
- species
- Collema ryssoleum