American botanist at the Philadelphia Academy of Natural Sciences. Born and raised in Hanover, Pennsylvania, Bayard Long attended Cheltenham High School from which he graduated in 1904, before entering the University of Pennsylvania. In 1908 he received a BSc with a major in botany and enrolled in the university's graduate school, but did not receive another degree. In 1906 Long became a member of the Philadelphia Botanical Club and from 1913 served as curator of the club's local herbarium, a position he held until his death. With other members of this club he collected in Pennsylvania, New Jersey and Virginia, maintaining a herbarium some 80,000 extremely carefully preserved specimens with detailed field notes. In 1924-1925 Long joined the Gray Expedition to Nova Scotia and Newfoundland where he collected alongside Merritt Fernald. Particularly interested in the Cyperaceae family, the sedge species Scirpus longii Fernald was named after him, as were several other species. Long published numerous papers on the distribution and biology of a range of plant species, including members of the Delphinium L., Scirpus L., Prunus L., and Crepis L. genera.

Sources:
J.M. Fogg, 1970, "Bayard Long (1885-1969)", Rhodora, 72: 130-136.