Name:		Collema nigrescens DC. apud Lamarck, J.B.A.P.M. de Monnet; Candolle, A.P. de, (1805) page 384
Basionym:		Lichen nigrescens Huds.
Status:		Species, lichen-forming
Taxonomic position:		Collema Weber ex F.H. Wigg. [Genus] Collemataceae Zenker [Family] Peltigerales Walt. Waton [Order] Lecanoromycetidae P.M. Kirk, P.F. Cannon, J.C. David & Stalpers ex Miądl., Lutzoni & Lumbsch [Subclass] Lecanoromycetes O.E. Erikss. & Winka [Class] Pezizomycotina O.E. Erikss. & Winka [Subdivision / Subphylum] Ascomycota Caval.-Sm. [Division / Phylum] Fungi R.T. Moore [Kingdom]
Constituent taxa:		Subspecific taxa Collema nigrescens forma caesium (Clem.) Ach. Collema nigrescens forma nigrescens Collema nigrescens forma quinqueseptatum (Kernst.) Zahlbr. Collema nigrescens var. biliosum Mont. Collema nigrescens var. furfuraceum Schaer. Collema nigrescens var. glaucocarpum Nyl. Collema nigrescens var. leucopeplum Tuck. Collema nigrescens var. nigrescens Collema nigrescens var. quinqueseptatum (Kernst.) Oxner Collema nigrescens var. ryssoleum Tuck. Collema nigrescens var. subnigrescens (Degel.) Pišút
Catalogue data:		Zahlbruckner, Catalogus Universalis Lichenum 3: 51, Zahlbruckner, Catalogus Universalis Lichenum 8: 283
Cybertruffle Resources:		Cyberliber Cumulative Index Biological Records Database (72 records)
Links:		Fungal Databases [Systematic Botany and Mycology, USDA] Genbank Google images IMI [CABI Fungus Dried Reference Collection] Index Fungorum Landcare [New Zealand] Mycobank New York Botanic Garden [Virtual Fungus Dried Reference Collection]