Catalogue no.:	L-1145209
Taxon:	Placolecis opaca
Label:	Psora opaca
Family:	Lichenes
Collector:	C. Flagey
Exsiccate:	Flagey, Lich. Alger. 145
Country:	Algeria
Province:	Constantine
Locality:	Sidi-Merid et le Constantind
Habitat:	R. R. Sur les calcaires