Proc. Amer. Acad. Arts Sci. 6: 263 (1864).

Type: USA, New Hampshire, White Mountains ["in Montib. Albis"], 1852, Tuckerman (FH-TUCK 1508 - holotype).

Ecology: In Alaska in moist, boreal forests on Picea glauca twigs (Nelson et al. 2011: 4).

Note: There is a variety: Collema leptaleum var. biliosum (Mont.) Degel. mentioned from Mauritius a.o.