GENERA OF GRASSES OF THE UNITED STATES. 
181 
falling entire; glumes equal, inflated, obovate, 3-nerved, rounded 
above but the apex apiculate; lemma narrow, 5-nerved, acuminate, 
about as long as the 
glumes ; palea 2- 
merved, nearly as 
long as the lemma. 
An erect, rather 
stout annual, with 
flat blades and nu- 
merous short ap- 
pressed spikes in a 
narrow more or less 
interrupted panicle. 
Species one, in the 
cooler parts of 
America and Eur- 
asia. 
Type species: Phalaris erucae- 
formis L. 
Beckmannia Host, Gram. 
Austr. 3: 5, pi. 6. 1805. Only 
one species described. 
Beckmannia erumeformis 
(L.) Host (fig. 108) is a 
marsh plant, found from 
Iowa to California and 
Alaska where it is often 
called slough-grass. It is 
Fl \, 10 l~2 ^ ed0 ™^ d ™ penicillatus, palatable to stock, is some- 
Plant, X I ; spikelet and floret, X 5. 1 ' 
