Betula cordifolia mature to about 3–5 cm long and bear winged nutlets about 2–3 mm long. "Betula cordifolia" is found in Atlantic Canada, Quebec, northwestern Ontario, Northern New York State, and New England. It is generally found in northern habitats or high elevations, particularly on moist ground. "Betula cordifolia" and "Betula papyrifera" are very similar species, indeed they were once considered the same species. The primary methods of distinguishing the one from the other include: Since many of these characteristics vary from tree to tree, ideally several of these characteristics should be noted before making a positive identification. It has been suggested
White-winged vampire bat White-winged vampire bat The white-winged vampire bat ("Diaemus youngi"), a species of vampire bat, is the only member of the genus Diaemus. They are found from Mexico to northern Argentina and are present on the islands of Trinidad and Margarita. The white-winged vampire bat was described by Dutch zoologist Fredericus Anna Jentink in 1893. Dr. Charles Grove Young (1849-1934) is the eponym for the species name "youngi". Jentink decided to honor Young with the species name because "our Museum is indebted [to him] for so many additions to its collections of the British Guyana animals." When it was described by