Collema undulatum var. granulosum Degel.

Selection criteria. Country: any country. Associated organism: any (distribution map)

Number of records. 7. Countries. British Isles, Georgia, United Kingdom. Substrata. rock. Collections. TBI unnumbered. Literature. Cannon, Hawksworth & Sherwood-Pike (1985); Hawksworth, James & Coppins (1980) page(s) 33; Nakhutsrishvili (1986) page(s) 714.