PANICEE | 183 
annual with a drooping panicle. Pard-grass (P. barbinode 
Trin.), a Brazilian grass much cultivated for forage in the 
American tropics, is sparingly grown in the southern 
parts of Florida and Texas. It is a coarse grass, with 
stolons several feet in length, strongly 
bearded nodes, and an inflorescence of 
several spike-like racemes racemosely 
arranged. Guinea-grass (P. maximum 
Jacq.) is an African grass, also much 
grown in the tropics for forage. It is an 
erect bunch-grass, as much as 8 feet high, 
with a large spreading panicle. Guinea- 
grass is too susceptible to frost for culti- 
vation in the United States except in 
southern Florida. Texas millet, or Colo- 
rado-grass, is P. tecanum Buckl., a native 
of the Colorado River valley in Texas 
(Par. 62). Panicum bulbosum H. B. K., 
of the Southwest, produces well-marked 
corms. 
- 218. Echinochloa Beauv—A small 
genus that is included by some as a 
section of Panicum. The spikelets are 
as in Panicum, but the sterile lemma 
and usually the second glume are | 
awned, often conspicuously so. The 
fruit is pointed and the palea is free at 
the summit. The spikelets are in short 
racemes, these racemosely arranged. 
All the species are annuals. One 
species, barnyard-grass, EH. Crus-galla \ 
(L.) Beauv., is a common weed in Fic. 22. Echinochloa fru- 
mentacea. Inflorescence, 
waste places and cultivated soil, A x, spikelet, x5. 
