GRA8SES. 339 



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



Drooping Indian-Grass. 



Andropo(]on nutans Ell. Sk. 1:14-1. 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. Snrv. Herb. Mohr. 



Chrysopogon nutans lirmeanus Doell in Mart. IT. Bras. 2, pt. 1^:276. 1883. 



Andropogon nntans L. Sp. PL 2 : 104.5. 1753. 



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



Sorghumnntans Cha,p. Fl. 583. 1860. 



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



Brazil, Mexico. 



Louisianian area. North Carolina to PTorida, west to Texas. 



Alabama: r^ower 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 stont long awn. Per- 

 ennial. 



Type locality : "'Hab. in Virginia, .lamaica.'' 



Herb. Geol. "Surv. Herb. Mohr. 



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

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



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



Johnson-Grass. False Guinea Grass. 



Holcus halepensis L. Sp. PI. 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 axd Western Asia. 



Carolinian and Louisianian 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. Snrv. Herb. Mohr. 



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



Chicken Corn, Durrha, Sugar-Corx. 



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



Andropogon sorghum satlrus 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. Snrv. 



PASP ALUM L. Syst ed. 10, 2 : 8.55. 1765. 



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

 American. Nortli America, 28 species, all east of the Kocky Mountains, and chiefly 

 south of the Ohio Valley. 



Paspalum compressum (Sw.) Nees; Trin. Gram. Panic. 96. 1826. ('arpkt-Crass. 



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



I'aspalum platycaulon Poir. Enovcl. 5 : 34. 1804. 



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



West Indies, Mexico, south to Argentina. 



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

 region; lower Metamorphic hills. 



