LEUCODON ANDREWSIANUS COMB ET STAT-NOV

The eastern North American endemic moss Leucodon andrewsianus (Crum & Anderson) Reese & Anderson (basionym: Leucodon brachypus var. andrewsi anus Crum & Anderson) is recognized at the rank of species. Although p erichaetia are present rarely in this moss, it is not known to produce perigonia or sporophytes; it evidently reproduces and disperses by ca ducous branchlets. A key is provided for the three species of Leucodon known to occur in North America, north of Mexico.