GRASSES. 339 



Chrysopogon elliottii Mohr, Bull. Torr. Club. 24 : 21. 1897. 



DROOPING INDIAN-GRASS. 



Andropogon nutans Ell. Sk. 1:144. 1817. Not L. 



To this species are referred the forms with the panicle loose, the branches elon- 

 gated, drooping, and the fertile glumes covered with long silky hairs. 



Louisianian area. Carolina to Florida, Mississippi, and Tennessee. 



ALABAMA: Lower Pine region. Dry barren pine woods. Mobile and Escambia 

 counties. Three to 4 feet high. Common. Perennial. 



Type locality : "Grows in arid soils [South Carolina and Georgia]. Very common." 



Herb. Geol. Surv. Herb. Molir. 

 Chrysopogon mitans lirmeaiius Doell in Mart. Fl. Bras. 2, pt. 3: 276. 1883. 



Andropogon nutans L. Sp. PL 2 : 1045. 1753. 



A. nutans Unneanum Hackel, DC. Monogr. Phan. 6:531. 1889. 



Sorghum nutans Chap. Fl. 583. 1860. 



Chap. Fl. 1. c. ; ed. 3, 596. 



BRAZIL, MEXICO. 



Louisianiau area. North Carolina to Florida, west to Texas. 



ALABAMA: Lower Pine region. Coast plain. In dry close soil. Mobile County, 

 pine woods. August, September; not common 



Stem weak, assurgent, branches of the elongated narrow panicle sbort, spikelets 

 scattered, glumes smoothish, the fertile almost black, with a stout long awn. Per- 

 ennial. 



Type locality: "Hab. in Virginia, Jamaica." 



Herb. Geol. Surv. Herb. Mohr. 



SORGHUM Pers. Syn. PL 1:101. 1805. 

 Thirteen species, belonging to warmer regions of the Old World. 



Sorghum nalepense (L.) Pers. Syn. PI. 1 : 101. 1805. 



JOHNSON-GRASS. FALSE GUINEA GRASS. 



Holcm halepensis L. Sp. PL 2 : 1047. 1753. 



Andropogon halepensis Brot. Fl. Lus. 1:89. 1804. 



Coulter, Contr. Nat. Herb. 2 : 494. Vasey, Contr. Nat. Herb. 3 : 13. 



SOUTHERN EUROPE AND WESTERN ASIA. 



Carolinian and Louisianiau areas. All over the Southern States. Introduced and 

 escaped from cultivation, becoming a most troublesome and almost ineradicable 

 weed. 



ALABAMA : From the Central Pine belt to the coast. Most abundant in the Central 

 Prairie belt. Perennial. 



Type locality: "Hab. in Syria, Mauritania." 



Economic uses: Frequently cultivated for hay and green forage. 



Herb. Geol. Surv. Herb. Mohr. 



Sorghum vulgare Pers. Syn. PL 1 : 101. 1805. 



CHICKEN CORN, DURRHA, SUGAR-CORN. 



Holcm sorghum L. Sp. PL 2 : 1047. 1753. 



Andropogon sorghum sativus Hackel in DC. Monogr. Phan. 6 : 505. 



Escaped from cultivation, becoming a pernicious Aveed in many parts of the Southern 

 States. 



ALABAMA: Most frequent in the Central Pine belt and Central Prairie region. 

 Annual. 



Economic uses : Important for green forage, hay, and grain. 



Type locality: "Hab. in India." 



Herb. Geol. Surv. 



PASP ALUM L. Syst. ed. 10, 2 : 855. 1765. 



One hundred and sixty species, perennials, tropical and subtropical regions, mostly 

 American. North America, 28 species, all east of the Rocky Mountains, and chiefly 

 south of the Ohio Valley. 



Paspalum compression (Sw.) Nees; Trin. Grain. Panic. 96. 1826. CARPET-CRASS. 



Milium compressum Sw. Fl. Ind. Occid. 1 : 183. 1788. 



Paspalum platycaulon Poir. Encycl. 5 : 34. 1804. 



Coulter, Contr. Nat. Herb. 2 : 500. Griseb. Fl. Brit. W. Ind. 541. 



WEST INDIES, MKXICO, SOUTH TO ARGENTINA. 



Louisianiau area. Florida to Texas. Naturalized. Coast plain to Mountain 

 region; lower Metamorphic hills. 



