''Collema'' (jelly lichen) is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

lichen A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship. The photobiont is the cyanobacterium genus ''Nostoc''.Dobson, F.S. (2000) Lichens, an illustrated guide to the British and Irish species. 4th edition. Richmond publishing Co., Slough, England.

Species

*''Collema actinoptychum'' *''Collema coniophilum'' – Canada *''Collema flaccidum'' *''Collema furfuraceum'' *''Collema glaucophthalmum'' *''Collema glebulentum'' *''Collema implicatum'' *''Collema insulare'' *''Collema japonicum'' *''Collema laeve'' *''Collema leptaleum'' *''Collema leucocarpum'' *''Collema marginale'' *''Collema nigrescens'' *''Collema pulcellum'' *''Collema pustulatum'' *''Collema rugosum'' *''Collema ryssoleum'' *''Collema sichuanense'' – China *''Collema subconveniens'' *''Collema subflaccidum'' *''Collema subnigrescens'' *''Collema substipitatum''

References

Peltigerales Lichen genera Peltigerales genera Taxa described in 1780 {{Peltigerales-stub