A text-book of grasses with especial reference to the economic species of the United States . aximumJacq.) is an African grass, also muchgrown in the tropics for forage. It is anerect 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 insouthern Florida. Texas millet, or Colo-rado-grass, is P. texanum Buckl., a nativeof the Colorado River valley in Texas(Par. 62). Panicum hulhosum H. B. K.,of the Southwest, produces well-markedcorms. 218. Echinochloa Beauv.—A smallgenus that is included by so
A text-book of grasses with especial reference to the economic species of the United States . aximumJacq.) is an African grass, also muchgrown in the tropics for forage. It is anerect 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 insouthern Florida. Texas millet, or Colo-rado-grass, is P. texanum Buckl., a nativeof the Colorado River valley in Texas(Par. 62). Panicum hulhosum H. B. K.,of the Southwest, produces well-markedcorms. 218. Echinochloa Beauv.—A smallgenus that is included by some as asection of Panicum. The spikelets areas in Panicum, but the sterile lemmaand usually the second glume areawned, often conspicuously so. Thefruit is pointed and the palea is free atthe summit. The spikelets are in shortracemes, these racemosely the species are annuals. Onespecies, barnyard-grass, E. Crus-galli(L.) Beauv., is a common weed in fig. 22. Echinochloa fm- , ?, I ii« , 1 Mi mentacea. Inflorescence, waste places and cultivated soil. A x 3^, spike let, x 184 A TEXT-BOOK OF GRASSES closely allied species, E. frmnentacea (Roxb.) Link (), is cultivated for forage under the name billion-dollar-grass. This and E. colonum (L.) Link are cultivated inIndia for the seed, which is used for food. 219. Tricholaena Schrad.—A small genusof African grasses, one of which has beenintroduced into the American in panicles, very hairy. Tricho-Icena rosea Nees has given promise of valueas a meadow-grass on the dry pine landsof Florida. It is there called Natal-grassand, incorrectly, redtop. Natal-grass is anerect perennial, 2 to 3 feet high, with aloose panicle of pink or rosy silky spike-lets. It is said to furnish 4 or 5 cuttingsof hay in a season. This grass may begrown from seed or by setting out divisionsof the root or crown. 220. Chaetochloa Scribn.—A smallgenus of annuals or perennials, the spike-lets in narrow often spike-like pa
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