GRASSES. 351 



Alabama : Coast plain ; low damp grassv pine barrens. Mobile County, Summer- 

 ville, June 1, 1899. 



Type locality: "White Cliff Springs [Tennessee], July, 1890; Tullahoma, July, 

 1892." (Scribner.) 



Herb. Geol. Surv. Herb. Mohr. 



Panicum parvispiculum Nasli, Bull. Torr. Club, 24 : 347. 1897. 



Stems 12 to 20 inches long in tufts, erect to decumbent at the base, appressed-hir- 

 sute; internodes blackish brown, more or less pubescent; sheaths shorter than the 

 internodes, appressed-hirsute to piiberulent or glabrous and ciliate on the margins; 

 ligule a ring of copious hairs; leaves erect or ascending, rigid, linear-lauceolatc, 

 rough on the margins, glabrous above, pubescent beneath, acuminate at apex, 

 rounded at the base, the primary 1^ to il inches long, yV to i inch wide, the later 

 about 2 inches long. Primary panicle broadly ovate, 3 to 4 inches long, with ascend- 

 ing branches, much divided from the base, frequently pilose at the base ; sidkelets 

 numerous, small, on divergent pedicels, outer glumes closely pubescent Avith spread- 

 ing hairs; the first one-third as long as the spikelet. 



Louisianian area. Georgia, Florida. 



Alabama: Central Pine belt to Coast plain. Dry open woods, pastures, borders 

 of fields. Tuscaloosa County {E. J. Smith). Washington, Baldwin, and Mobile 

 counties, April, May; frequent; perennial. 



Type locality: " Darien Junction, Mcintosh County, Ga." {Dr. John K. Small). 



Herb. Geol. Surv. Herb. Mohr. 



Panicum longiligulatum Nash, Bull. Torr. Club, 26 : 57.5. 1899. 



A tufted rather smooth perennial, the slender culm 16 to 20 inches long, fasciculate- 

 branclaed above, forming dense masses toward the top ; stem leaves 4 or 5, erect- 

 spreading, narrow, lanceolate, with serrulate margins, 1 to 1^ inches long, those of 

 the branches smaller; sheaths from one-half to two-thirds as long as the internodes, 

 ligule a ring of long silky hairs; basal leaves thick, broadly lanceolate, li to 2 

 inches long; panicle oval, about 2 inches long, exserted, with spreading branches; 

 spikelets ovate, densely pubescent, with spreading hairs. 



Louisianian area. Western Florida. 



Alabama: Coast plain. Damp woods. Mobile County (T. S. Kearneti, July). 



Type locality : "Apalachicola, Fla.'' ( Vasen, 1892). 



Near P. parvispiculum, from which it differs in its more slender culms, its smaller 

 blades, and the glabrous margins of the sheaths (Nash). 



Panicum nashianum Scribner, Bull. U. S. Dept. Agr. Div. Agrost. 7 : 79, /. 61. 1897. 



Nash's Panic Grass. 



Slender and finally much branched, perennial, 5 to 10 inches high, with flat short 

 leaves, ciliate on the margin toward the base, and open pyramidal panicles, the 

 liexuous branches widely spreading or refiexed. Closely allied to P. demissum Triu. 



Carolinian and Louisianian areas. Southeastern \"irginia, along the coast to Florida 

 and Mississippi. 



Alabama: Coast plain. Low pine barrens. Mobile County. March to May. 



Type locality: "Near the coast, Virginia to Mississippi."' 



Herb. Geol. Surv. Herb. Mohr. 



Panicum ■webberianum Nash, Bull. Torr. Club, 23 : 149. 1890. 



A slender, erect, rather smoothish perennial, with an erect or ascending stem 18 to 

 24 inches long, smooth except below; sheaths smooth, excejit, the ciliate margins, 

 inflated ; leaves erect or erect-spreading, lanceolate, narrowed at the roundish base, 

 2 to 3 inches long, 3 or 4 lines wide, 7 to 11 nerved, glabrous at the base, sparingly cil- 

 iate; panicle 2 to 4 inches long, i inch wide, the mostly simple branches spreading. 



Louisianian area. Florida. 



Alabama: Coast plain, damj) pine woods. Mobile County, Summerville, June, 

 1899. 



Type locality: "Low pine land at Eustis, Lake County, Florida." (Nash, May, 

 1894, No. 787). 



Panicum roanokense Ashe, Journ. Elisha Mitch. Soc. 15 : 44. 1898. 



A slightly tufted, erect, slender, smooth peiemiial, the erect culm about 18 inches 

 high from a geniculate base, in specimens from Alabama faintly hairy at the nodes; 

 leaves nar^-owly lanceolate, 2 to 3 inches wide, firm, 5 to 7 nerved; ])anicle 2^ to 3 

 inches long, broadly ovate, the slender fascichnl branches spreading; spikelets 

 numerous, 1 line long, elliptical, obovate, glabrous. 



Carolinian and Louisianian areas. North Carolina, Mississippi. 



Alabama: Central Pine belt to Coast plain. In dry woods. Tuscaloosa County 

 (Dr. E. A. Smith). Mobile ("ountv. April, May; not frequent. 



Type locality: "Roanoke Island, N. C." ( H'. W. Ashe, June, 1898.) 



