GRASSES. 389 
Chrysopogon elliottii Mohr, Bull. Torr, Club, 24:21. 1897. 
DROOPING INDIAN-GRASS. 
Andropogon nutans EM, 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. Mohr. 
Chrysopogon nutans linneanus Doell in Mart. Fl. Bras. 2, pt.3:276. 1883, 
Andropogon nutans L. Sp. Pl. 2:1045, 1753. 
A. nutans linneanum Hackel, DC. Monogr. Phan, 6:531, 1889. 
Sorghum nutans Chap, Fl. 583, 1860. 
Chap. FI. l.e.; ed. 3, 596. 
BRAZIL, MEXICO. 
Louisianian 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 short, 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 halepense (I...) Pers. Syn. Pl. 1:101. 1805. 
JOHNSON-GRASS. FALSE GUINEA GRASS, 
Holeus halepensis L. Sp. Pl. 2:1047, 17538. 
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 Louisianian areas. All over the Southern States. Introduced and 
escaped from cultivation, becoming « 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.” 
Eeonomic 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. 
Holeus sorghum L. Sp. Pl. 2:1047. 1758. 
Andropogon sorghum sativus Hackel in DC. Monogr. Phan. 6: 505. 
Escaped from cultivation, becoming a pernicious weed 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. 
PASPALUM 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 compressum (Sw.) Nees; Trin. Gram. Panic. 96. 1826. | CARPET-GRASS. 
Milium compressum Sw. FI. Ind. Occid. 1: 183, 1788. 
Paspalum platycaulon Poir. Encyel. 5:34. 1804. 
Coulter, Contr, Nat. Herb. 2:500. Griseb. Ff]. Brit. W. Ind. 541. 
West INDIES, MEXICO, SOUTIL TO ARGENTINA, 
Louisianian area, Florida to Texas. Naturalized. Coast plain to Mountain 
region; lower Metamorphic hills, 
