The Caliciales of Northern Maine

Thirty-five species belonging to ten genera of Caliciales are reported for Maine north of Mount Katahdin. Twenty-three are new records for the state and one, Chaenothecopsis brevipes Tibell, is a new record for the Northern Hemisphere. An identification key is presented as are diagnoses and information on the taxonomy and ecology of each species. In 1894, F. L. Harvey published a list of 115 species of lichens that included all the species known by the writer to have been published from the state of Maine. He makes reference to the fact that, while his list includes no lichens from northern Maine, lichenologist Clara Cummings had quite extensively during the past season in Aroostook County, and we understand has detected quite a large number of interesting forms that will swell the State list. The addition of 21 taxa collected in Aroostook