352 PLANT LIFE OF ALABAMA. 
Panicum dichotomum L. Sp. P].1:58. 1753. FORKED PANICUM, 
Ell. Sk. 1:124. Gray, Man. ed. 6, 633. Coulter, Contr. Nat. Herb. 2:506. Britt. 
.F1.1:120. 
Be eecnre ie seer area. Canada, throughout the eastern United States, 
west to Texas. 
ALABAMA: Over the State, scattered in dry and damp soil. June; frequent. 
Type locality: ‘‘Hab. in Virginia.” 
Herb. Geol. Surv. Herb. Mohr. 
Panicum thurowii Scribn. & Smith, Cire. U. 8. Dept. Agr. Div. Agrost. 16:5. 1899. 
A rather stout, erect or ascending, pubescent or villous, simple or sparingly 
branched perennial, 12 to 16 inches high, with 5 or 6 densely white-bearded nodes, 
sparingly villous sheaths, lanceolate-linear leaves 2.7 to 3.9 inches long, and ovate- 
pyramidal, shortly exserted panicles, 2.7 to 3.1 inches long. Sheaths shorter than 
the villons internodes, striate and tuberculate above between the striw; ligule a 
ring of stiff white hairs 1.4 to 1.6 lines long; leaf-blades flat, 3.2 to 4.6 lines wide, 
softly pubescent on the lower surface, glabrous above, unusually ciliate on the 
scabrous margins toward the base. ‘There is a very densely villous line on the back 
where the blade joins the sheath. Axis of the panicle sparingly pilose; the branches 
subflexuous, villous at the base. Spikelets narrowly elliptical, obtuse, .7 to .9 lines 
long. First glume one-fifth the length of the 7-nerved, pubescent, and obtuse second 
and third glumes, which are slightly shorter than the lanceolate. elliptical, acute 
floral glume. ost. — 
Very closely related to Panicum pubescens Lam., differing in its more densely 
flowered narrower panicles, smoother spikelets, and simple culms. The leaves and 
spikelets are purplish. 
Louisianian area. Texas, Florida (Lake County). 
ALABAMA: Coast plain. Open pine woods, vicinity of Mobile, June, 1897. 
Type locality: ‘Walker County, Tex.” (I. W. Thurow, May, June, 1898, Nos. 9 
and 11). 
Panicum barbulatum Michx. Fl. Bor. Am. 1:49. 1809. BEARDED Panicum. 
Panicum nitidum barbulatum Chap. FI. ed. 3, 586. 1897. 
Ell. Sk. 1:127. Chap.1l.c. Scribner, Grass. Tenn. 2:54. 
Carolivian and Louisianian areas. New York and New Jersey, south to Florida, 
west to Mississippi. 
ALABAMA: Over the State. In damp sandy soil. Rare in the mountain region, 
frequent near the coast. Mobile County. 
Type locality: ‘‘ Hab. in Carolina.” 
Herb. Geol. Surv. Herb. Mohr. 
Panicum haemacarpon Ashe, Journ. Elisha Mitchell Soc. 15:55. 1898. 
A somewhat tufted, erect, rather stout perennial, with the culm ascending from 
the geniculate base, 12 to 18 inches high, at the base villous with spreading hairs, 
smoothish above; leaves erect, ascending, 1 to 2 inches long, 2 to 3 lines wide, lanceo- 
late, the middle ones largest, more or less pubescent with scattered hairs; sheaths 
shorter than the internodes, papillate-villous with long, soft, spreading hairs; nodes 
bearded; panicle 14 to 2 inches long, broader than long, wide-spreading, rather few- 
flowered; spikelets generally red, 1 line long, broadly obovate; first glume one-third 
as long as the pubescent second and third. 
Carolinian and Louisianian areas. District of Columbia, North Carolina, Iowa 
ALABAMA: Coast plain. Dry open woods. Mobile. 
Type locality: ‘District of Columbia, Kearney, 1897; Ashe, North Carolina, 
Chapel Hill, 1898; Iowa, Carver.” 
Herb. Geol. Surv. Herb. Mohr. 
Panicum pseudopubescens Nash, Bull. Torr. Club, 26:577. 1899. 
A densely pubescent perennial, the culms 8 to 16 inches high, branched hirsute 
with ascending hairs, the nodes barbed; leaves rather firm, lanceolate, serrulate, 
rough on the margins, 2 to 4 inches long and 3 to 5 lines wide, densely hispid on 
the lower surface and above with spreading hairs; panicle exserted, broadly ovate, 
2 to 34 inches long, sparsely hairy; spikelets about 1 line long, obovate, first glume 
about one-third as long; spikelets ovate, pubescent with spreading hairs. 
Carolinian and Louisianian areas. 
ALABAMA: Mountain region to Lower Pine belt. Dry and dampopen woods. Cull- 
man County. Lee County, Auburn (Baker § Earle). Mobile County, Springhill, 
Citronelle. May, June; frequent. ‘ 
Type locality: ‘Auburn, Lee County, Ala.” (Baker §: Earle, No. 1537, ete.) 
Distinguished from P. pubescens by its much larger spikelets, 
