GENERA OF GRASSES OF THE UNITED STATES. — 155 
nounced oblique callus, the apex terminating in a long straight 
scabrous awn, 
Perennial erect, slender grasses, with short knotty rhizomes, flat 
blades and narrow, rather few-flowered panicles. Species one, North 
American. 
Vic. 89.—Heleochloa schoenoides, Plant, K 4; spikelet and floret, the palea splitting, * 5. 
Type species: Muhlenbergia crecta Schreb. 
srachyelytrum Beauy., Ess. Agrost. 39, pl. 9, f. 2. 1812. The type is the 
figured species, B. crectum, based on Muhlenbergia erecta. 
