348 PLANT LIFE OF ALABAMA. 



rowly linear long, acuminate leaves, the contracted short-stalked panicle, and obtuse 

 spikelets. Perennial. 



Vasey, Contr. Nat. Herb. 3 : 31. Coulter, Contr. Nat. Herb. 2 : 505. 



CUBA. 



Carolinian and Louisianian areas. Coast of southern Virginia to Florida, Missis- 

 sippi, and eastern Texas. 



ALABAMA: Lower Pine region. Metamorphic hills. Dry sandy soil. Mobile 

 County. Lee County, Auburn (F. S. Earle}. May, June. Not infrequent. 

 Type locality: "Cuba orientalis (Wright 3453); occidentalis, in savanis prope 

 Hanabana (Wright ad 1865)." 



Herb. Geol. Surv. Herb. Mohr. 



Panicum angustifolium Ell. Sk, 1 : 129. 1817. 



Panicum consanguineum Wats, in Gray, Man. ed. 6,633. 1889. In part. Not K until. 



P. neuranthum ramosum Griseb. Cat. PI. Cub. 232. 1866. 



Ell. Sk. 1. c. Gray, Man. ed. 6, 633. Chap. Fl. ed. 3, 585. Coulter, Contr. Nat. I lerh. 

 2 : 516. Scribner, Grass. Tenu. 2 : 48, 1. 12, f. 47, 48. 



WEST INDIES. 



Carolinian and Louisianian areas. Southern Virginia to southeast Tennessee and 

 Florida, west to Texas. 



ALABAMA: Coast Pine belt. Dry open pine forests. Metamorphic hillrf. Lee 

 County, Auburn (F. S. Earle). Washington County, Yellowpine. Mobile County, 

 Citronelle. April to May. Common. Perennial. 



Type locality : "Shaded dry soils [South Carolina, Georgia]." 



Robust forms of a dense habit of growth, the crowded leaves narrower and erect, 

 approaching stout forms of Panicum neuranthum, with which this species has been 

 confounded. 



Herb. Geol. Surv. Herb. Mohr. 



Panicum xanthospermum Scribner & Mohr, sp. nov. 



A low, erect, cespitose, hairy perennial, 5 to 9 inches high, more or less branched 

 from the base, with erect leaves and rather loosely flowered ovate or pyramidal pan- 

 icles 1 to 2 inches long. Culms, leaves, and shea'ths clothed with a soft pubescence 

 of rather long lax hairs; nodes bearded with erect-spreading white hairs; sheaths 

 shorter than the internodes, densely pilose ; leaves lanceolate-acuminate, rounded at 

 the base, gradually tapering to the apex, densely pilose beneath, more thinly so 

 above, the margins narrowly cartilaginous, often somewhat involute toward the 

 apex, those of the stem about 3, 1 to 3 inches Ion*?, 2 to 3 lines wide, the basal ones 

 soiuewhat shorter. Panicles slightly exserted, lax, pale ; rachis smooth or somewhat 

 pilose below; lower branches to 1 inch long, flexuous, gradually shorter above. 

 Spikelets about 1 line long, elliptical, obtuse, pale yellow or straw colored, con- 

 tracted at the base, for the most part long-pedicellate; first glume about one-fourth 

 as long as the spikelet, acute; second and third glumes equaling the flowering glume, 

 about 9-nerved, rather thinly pilose-pubescent with soft, spreading hairs; flowering 

 glume about f of a line long, elliptical, acute, very smooth. 



Near P. arenicola, from which it differs by its large yellowish spikelets. 



Type specimen collected by Dr. Charles Mohr in open sandy soil, Greenville, Butler 

 County, Ala., May 8, 189*. 

 Panicum cahoonianum Ashe, Jouru. Elisha Mitch. Soc. 15 : 113. 1898. 



Panicum georgianum Ashe, Jouru. Elisha Mitch. Soc. 15 : 36. 1898. Not P. georgicum 

 Spreng. 



A low, densely tufted, much-branched, perennial, glabrous or soft-pubescent ; culms 

 4 to 8 inches high ; leaves erect or ascending, oblong-lanceolate, 1 to 2 inches and 

 over long, about 2 lines wide, taper-pointed, soft-pubescent or glabrate; panicle 

 short-peduncled, its branches erect-spreading; spikelets 1 lines long, broadly 

 elliptical, softly pubescent. 



Louisianiau area. Georgia and Florida. 



ALABAMA: Coast plain. Dry sandy woods. May, 1882. 



Type locality : "Dry sandy soil, southern Georgia and Florida." (Small, Chapman.) 



Panicum arenicola Ashe, Journ. Elisha Mitch. Soc. 15 : 56. 1898. 



A tufted perennial with erect culms geniculate at the base, 10 to 24 inches high, 

 pubescent at least below; leaves more or less erect, 2 to 3 inches long and 1 to 2 

 lines wide, much smaller above, taper-pointed, sheaths pubescent, panicle long- 

 exserted, spreading, 2 to 3 inches long with spreading branches; spikelets obovate, 

 obtuse, little less than 1 line long. 



Carolinian and Louisianian area. Eastern North Carolina, western Florida. 



ALABAMA: Lower division of Coast Pine belt. In open sandy pine woods. Mobile 

 County, Springhill, abundant. May, 1899. 



Type locality: "Chapel Hill, N. C." ( W. W. Ashe, June, 1898), and eastern part of 

 State. 



