GENERA OF GRASSES OF THE UNITED STATES. 
155 
Bounced 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. 
Fig. 89. — Heleochloa scJwenoides. Plant, X £ ; spikelet and floret, the palea splitting, X 5. 
Type species: Muhleribergia (recta Schreb. 
Brachyelytrum Beam-., Ess. Agrost. 39, pi. 9, f. 2. 1812. The type* is the 
figured species, B. crectum, based on M uhlenbergia etecta. 
