GRASSES. 847 
about 2 feet high. Leaves lanceolate, acuminate at the base, ciliate; sheaths ciliate ; 
panicle of stout rigid alternate spreading branches bearing the more or less 
crowded, pediceled, ovate, acute spikelets on one side, single or in pairs; flowering 
glume transversely rugose. 
East aND Wrst INDIEs, BRAZIL. 
ALABAMA: Fugitive on ballast, Mobile, September, 1891. 
Type locality not ascertained. 
Panicum gymnocarpon Ell. Sk. 1:117. 1817. 
Chap. Fl. 573. Coulter, Contr. Nat. Herb. 2:509. 
Louisianian area. Coast of Georgia and Florida, west to Texas. 
ALABAMA: Lower division Coast Pine belt. Alluvial forests. Mobile County, 
Pierce’s Landing; not frequent; perennial. 
Type locality: ‘From specimens collected near Savannah, by Dr. Baldwin.” 
Herb. Geol. Surv. Herb, Mohr. 
Panicum repens L. Sp. Pl. ed. 2, 1:87. 1762. CREEPING PANICUM. 
Panicum arenarium Brot. Phyt. Lus. 1:15. 1816. 
Chap. Fl. Suppl. 666. Coulter, Contr. Nat. Herb, 2:505. 
Evuropr, Mexico, CANARY ISLANDS. 
Lonisianian area. Alabama and Texas to Southeast Mexico. 
ALABAMA: Sandy shores. Mobile County, mouth of Mobile River, swampy edge 
of the river bank, forming dense tussocks. Baldwin County, eastern shore of Mobile 
Bay, damp sands. July to September; frequent; perennial. 
Type locality: ‘‘Hab. in Hispania? inde missum a Claud. Alstromoer.” 
Economic uses: Valuable sand binder. 
Herb. Geol. Surv. Herb. Mohr. 
Panicum littorale Mohr; Vasey, Bot. Gaz.3:106. 1878. 
Panicum repens confertum Vasey, Contr. Nat. Herb. 3:28. 1891. 
P. gouint Fourn. Mex. Pl. 2:28. 1881. 
Coulter, Contr. Nat. Herb. 2: 505. 
MEXICO. 
ALABAMA: With the above, frequent; perennial; from long running rootstocks. 
Type locality: ‘‘Mobile, Ala. * * * Dritting sands of the Gulf coast.” 
Herb. Geol. Surv. Herb. Mohr. 
Panicum melicarium Michx. Fl. Bor. Am.1:50. 1803. GaPING PaNICUM. 
Panicum debile Poir. Encycl. Suppl. 4: 283. 1816. Not Ell. 
P. hians El. Sk.1:118. 1817: 
Chap. F1.573. Coulter, Contr. Nat. Herb. 2:504. 
MEXICO, BRAZIL. 
Lonisianian area. North Carolina to Florida, west to Texas. 
ALABAMA: Central Prairie region to Coast plain. Low muddy places, ditches. 
Lee County, Auburn ( Baker §° Earle). Montgomery County. Hale County, Gallion. 
Wilcox, Monroe, Mobile, and Baldwin counties. Irequent; June to August; per- 
ennial. 
Type locality: ‘‘ Hab. in Carolina, Georgia.” 
Herb. Geol. Surv. Herb. Mohr. 
Panicum depauperatum Muhl. Gram. 112. 1817. IMPOVERISHED PANICUM. 
Gray, Man. ed. 6, 633. Chap. Fl. 576. Scribner, Grass. Tenn. 2: 49, t. 13, f. 49. 
Canadian zone, Alleghenian to Louisianian area. Newfoundland, Nova Scotia, 
Ontario, New England, west to Minnesota and Nebraska, south to Florida and Texas; 
Arkansas. 
ALABAMA: Central Prairie region. Open woods and dry copses. Metamorphic 
hills. Lee County, Auburn (F. 8. Earle). Montgomery County. Infrequent; per- 
envial. 
Type locality: ‘Pennsylvania, Carolina.” 
Herb. Geol. Surv. Herb. Mohr. 
Panicum neuranthum Griseb. Cat. Pl. Cub. 232. 1866. NERVED PANICUM. 
Perennial; culm 1 to 1} feet high, more or less pubescent, branched from the base; 
branches erect, scarcely longer than the leaves; leaves narrow, linear-lanceolate, } to 
¥; inch wide and from 4 to 5 inches long, acuminate, acute, smoothish, strongly many- 
nerved; ligule a ring of stiff hairs; sheaths about as long as the internodes, villous 
from minute papillx; panicles mostly included, short, contracted; spikelets on short 
erect pedicels, obtuse; first glume small, smooth; second and third glumes strongly 
7 to9 nerved, pubescent. Readily distinguished from P. angustifolium by the nar- 
