Bruce Pettit McCune (born 1952) is an American lichenologist, botanist, plant ecologist, and software developer for analysis of ecological data.
From 1971 to 1974 McCune and his then girlfriend, Patricia S. Muir, spent considerable time on Mount Sentinel, where they investigated lichens, mosses, and other plants.
... His lichen research spans ecology, floristics, conservation, response to pollution, growth and development, and taxonomy.
Bruce has described many new species, especially in the genus Hypogymnia, on which he is a world authority, but also in Bactrospora, Hypotrachyna, Letharia, Pseudocyphellaria, Rhizocarpon, Rinodina and Trapeliopsis.
Throughout his career, Bruce has been an avid formal collector of plants, bryophytes and lichens with over 37000 accession numbers to his name.