168 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Froriwa: Baldwin, Hitchcock 989; Lake City, Combs 183; Madison, Combs 216; 
Monticello, Combs 301, 329; Tallahassee, Combs 372, 380 - Quincy, Combs 408; 
Washington County, Combs 554, 567a; Leon County, Curtiss E; Chatta- 
hoochee, Tracy 3639; Mari- 
anna, Tracy 3637; Milton, Chase 
4302; Eustis, Nash 1243; Pasco 
County, Curtiss 6639. 
AuaBaMa: Tuskegee, Carver 96; 
Gateswood, Tracy 8420; Mo- 
bile, Kearney 21 in part. 
Mississippi: Starkville, Chase 
4444; vicinity of Biloxi, Chase 
4359, Hitchcock 1082, Kearney 
2844, 306 in part, Tracy 1417, 
3634. Fig. 157.—Distribution of P. aciculare. 
Lovuistana: Covington, Langlois 
48b in 1884; Calecasieu, Cocks 2194; Lake Charles, Hitchcock 1127, 11394, 1140, 
Tracy 3650. 
Texas: Waller County, Hitchcock 1225, Thurow 1 in 1900. 
OKLAHOMA: Seipulie, Ee 1388 | in 1895 (Mo. Bot. Gard. Herb.). 
ee, 92. Panicum Gus tarot Nash. 
Panicum chrysopsidifolium Nash in Small, Fl. Southeast. U. 8. 100. 1903. On page 
1327, in the list of new genera and species, the following citation is given: “Type, Cur- 
tiss, N. Am. Pl., no. D,in Herb.N. Y.B.G.” The type, in the herbarium of the New 
York Botanical Garden, is labeled ‘‘Hammock land, Leon Co. Fla., May 12, 1886,” 
and consists of a clump of four vernal culms 30 to 55 cm. high with mature, short- 
exserted panicles. 
DESCRIPTION. 
Vernal form with ascending or spreading, rather slender culms, 30 to 45 cm. high, 
purplish, grayish-villous, especially below, the nodes bearded; sheaths much shorter 
than the internodes, villous like the culm, densely so at the summit; blades 5 to 10 
cm. long, 3 to 5 mm. wide, tapering from base to apex, conspicuously pointed, villous 
on both surfaces; panicles finally long-exserted, 4 to 6 cm. long, about three-fourths 
as wide, the flexuous branches ascending or spread- 
ing; spikelets 2 mm. long, 1.2 to 1.3 mm. wide, ob- 
ovate,’ blunt and turgid; first glume one-third the 
length of the spikelet, subacute or obtuse; second 
glume and sterile lemma subequal, scarcely cover- 
ing the fruit at maturity, villous, the bullate pa- 
pille prominent; fruit 1.7 mm. ee, 1.2mm. wide, 
broadly elliptic, minutely oer bent en at the apex. 
Te) 1580. chivednstaifoHam’, Irony Autumnal form spreading and forming mats, the 
type specimen. culms slender, often zigzag toward the tip; blades 
numerous, flat, becoming papery with age, mostly 
1 to3 cm. long, 1.5 mm. wide; spikelets more turgid than usual in the primary panicle. 
Panicum chrysopsidifolium has been confused with P. neuranthum Griseb., because 
both species were distributed by Wright under the same number (Wright 3453). 
This number in the Grisebach Herbarium is the type of P. newranthum. The same 
number in several other herbaria consists of the autumnal form of P. chrysopsidifolium.¢ 
@ For further discussion of Wright’s Cuba grasses, see Hitchcock, Contr. Nat. Herb. 
12: 183. 1909. 
