164 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
DISTRIBUTION. 
Flatwoods and hammocks, Florida and along the Gulf coast to Mississippi; also in 
Cuba. 
Fioripa: Live Oak, Tracy 6727; Washington County, Combs 649 in part; Apa- 
lachicola, Biltmore Herb. 6022a, Kearney 96; Orange County, Baker 68, 
Combs & Baker 1086, Curtiss 6627; Orange Bend, Chase 4104; Titusville, 
Chase 3967; Dunedin, Tracy 
6698, 6723; Kalamazoo, Hitch- 
cock 762; Sanford, Hitchcock 
771, 772, 827; Manatee, Hitch- 
cock 950,974; Lakeland, Hitch- 
cock 843; Tampa, Combs 1338, 
Hitchcock 933, 943; Hog Island, 
Tracy 6710 in part; Lemon 
Bay, Tracy 7188 in part; 
Sneeds Island, Tracy 6692; 
Santa Rosa Island, Tracy 8411; 
Myers, Hitchcock 868, 903, 923%, Fic. 153.—Distribution of P. polycaulon. 
Lee Co. Pl. 482; Miami, Chase 
3885, Hitchcock 112, 665, 711, 721; Homestead, Hitchcock 6894. 
ALABAMA: Fort Morgan, Tracy 7208. 
Mississippi: Horn Island, Tracy 6470; Petit Bois Island, Tracy 4606; Ocean 
Springs, Skehan in 1895; Biloxi, Chase 4364. 
Cusa: Herradura, Hitchcock 115; without locality, Wright 3875 in part; Isle of 
Pines, Palmer & Riley 990. 
Porro Rico: Near Piedra Blanca, Sintenis 5724, SSCS 
Wa: acs COAy 
90. Panicum strigosum Muhl. 
Panicum strigosum Muhl. in Ell. Bot. 8. C. & Ga. 1: 126. 1816. Elliott cites no 
locality. The type, in the Elliott Herbarium, is a single immature plant, the panicle 
only short-exserted. The accompanying label reads “‘Panicum strigosum Muhl. 
Hab. in humidis. Car: & Georg: Flor: Ma-Jun:.”’ 
Panicum laxiflorum pubescens Vasey, Contr. Nat. Herb. 3: 30. 1892. No locality 
nor specimen is cited. Only two specimens bearing this name in Vasey’s writing 
can be found in the National Herbarium. One of these, Curtiss North American 
Plants No. H, Duval County, Florida, agrees well with Vasey’s description; the other, 
a specimen of P. xalapense, does not agree with the description. The first is therefore 
chosen as the type. 
Panicum longipedunculatum Scribn. Tenn. Agr. Exp. Sta. Bull. 7: 53. pl. 16. f. 61. 
1894. ‘‘Damp woods, White Cliff Springs [Tennessee], July 1890; Tullohoma, July, 
1892. A large form of this species is represented by No. 3597* A. H. Curtiss N. Am. 
Pl.”’ The first specimen cited, which is evidently the plant 
figured and which is chosen as the type, is in Hitchcock’s 
herbarium. It consists of two tufts with slender culms 15 to 
40 cm. high, more sparsely pilose than usual. 
DESCRIPTION. 
Fig. 154.—P. strigosum. 
From type specimen. Vernal form similar to that of P. ciliatum, but having 
sparsely pilose culms and sheaths, bearded nodes, and blades 
on the average a little wider and more or less pilose on both surfaces; panicles larger, 
with pilose axis and branches, bearing more numerous, smaller, glabrous spikelets, 
the latter 1.3 to 1.5 mm. long, 0.7 mm. wide, obovate, less turgid than in other species 
