A taxonomic study of<i>Bryum billardieri</i>Schwaegr. and related species

Abstract

In the genus Bryum, the largest and one of the most difficult of all moss genera, the number of published specific names is certainly substantially greater than the number of good species. Some measure of order has been brought into the genus by regional studies (Andrews, 1940; Nyholm, 1958; Ochi, 1959, 1970, 1972) and by studies of critical groups (Crundwell & Nyholm, 1964; Syed, 1973; Wilczek & Demaret, 1976; Smith W reaching our area in Arizona ... also found in Texas ... '. Bartram (1949) followed Andrews' interpretation of this species, of which he said, 'a very happy solution of a complex problem'. Sainsbury (1955) also regarded B. truncorum as a widely distributed