Henssen: Lich. Cyano.
Aino Henssen [1-25]

University of Colorado, Museum of Natural History Herbarium Lichen Collection
Catalog #: COLO-L-0035710
A. Henssen #14394a 08 February 1962
Placynthium nigrum (Hudson) Gray
Canada, Alberta, Lake Obed, about 80 km west of Edson.