„ 
(v ROSTIS AR CEA (Trin. ) Beal, Grasses N. A. 2: 317. 
Olpodium a Hnacea Trin. Unt. 17. 1824; Sporobot rect coated en 
EED 2 dm. 
glum, m. (5% broad. Spikelets compressed, with near 
Pian. (a) about 4.5 mm, (2% long; flowering glume (b) acute or 
Palea obtuse or gpr 2-nerved.—In wet soil, river 
and British America. (Northeastern Asia.) July, August. 
