Pm. Eckel et al., PSEUDOCROSSIDIUM OBTUSULUM (POTTIACEAE, BRYOPSIDA) NEW TO MONTANA WITH A KEY TO NORTH-AMERICAN SPECIES IN THE GENUS, The Great Basin naturalist, 57(3), 1997, pp. 259-262
The moss species Pseudocrossidium obtusulum (Lindb.) Crum & Anderson i
s reported for the state of Montana. Recent systematics of the genus P
seudocrossidium in North America is discussed.