160 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
(Washington, D. C., May, 1897).’’ The Kearney specimen referred to could not be 
found in Ashe’s herbarium, but other specimens there under this name are P. zala- 
pense, aS are specimens in the National Herbarium bearing the name ‘‘ Panicum 
caricifolium” in Scribner’s writing. 
This is the species described as P. laxiflorum by American authors. 
DESCRIPTION. 
Vernal form similar to P. laxiflorum in texture and habit; culms and blades on the 
average shorter, the blades @ Pilose on one or both surfaces or nearly glabrous, usually 
short-ciliate, the uppermost more or less convolute 
at base around the culm; panicles hardly so few- 
flowered; spikelets 1.9 to 2 mm. long, 1.1 mm. wide, 
oblong-obovate, obtuse, the first glume one-fourth to 
one-third as long as the spikelet; second glume and 
sterile lemma pilose, less prominently papillose, the 
glume shorter than the fruit, the latter 1.5 mm. long 
and 1 mm. wide, oval, minutely umbonate. 
Autumnal form as in P. laziflorum, but forming 
usually denser tufts with shorter leaves. 
This species is conspicuously retrorsely pilose on the sheaths. Canby’s no. 106, 
Stone Mountain, Ga., in the Gray Herbarium, is exceptional in having almost glabrous 
sheaths. 
Fic. 146.—P. zalapense. From 
type specimen. 
DISTRIBUTION. 
Woods, Maryland, Illinois, and Missouri to Florida, Texas, and Mexico; also in 
Santo Domingo. — 
Inpi1ana: Clarke County, Deam 6883. 
Inuinots: Jackson County, French in 1905. 
Missouri: Campbell, Bush 749 in part; Swan, Bush 4638; Jefferson County, 
Eggert 127; Pacific, Kellogg 19. 
Maryann: Cabin John, Chase 5412, Chase in Kneucker Gram Exs. 549; west 
District Line, Hitchcock 343; Great Falls, Chase 2316, 2320. 
Vireinta: Richmond, DeChalmot; 
Smyth County, Small in 1892; 
Princess Anne County, Kear- 
ney 1033, 1104, 1179, 1308, 
1467, Pollard & Maxon in 
1900. 
Nortx Carouina: Biltmore, Bilé- 
more Herb. 2993a; Madison 
County, Biltmore Herb. 2993c; 
Raleigh, Ashe; Chapel Hill, 
Ashe, Chase 3057; Wilmington, 
Chase 3111, 3117, 3118. Fig. 147.—Distribution of P. zalapense. 
SoutH CAROLINA: Orangeburg, 
Hitchcock. 1391, 1415, 1424; Clemson College, House 2177. 
GrorGiaA: Thomson, Bartlett 1453; Rome, Curtiss 6791; Warm Springs, Tracy 
8867; Augusta, Cuthbert 1119, Kearney 212; Union, Harper 1085; Clarke 
County, Harper 77; Dublin, Harper 2140; Stone Mountain, Chase 4517, 
Eggert 86, Harper 183, Hitchcock 1361, Small in 1893, Wilson 14. 
Froriwa: Jacksonville, Curtiss 6602; Lake City, Combs & Rolfs 141; Tallahassee, 
Combs 390, Kearney 75; Siitlowsl, Hitchcock 773; Titusville, Giese 4009; Dade 
County, Curtiss 5537, Eaton 589, 831, Hitchcock 659, 673, Tracy 8849; Manatee 
County, Tracy 6694; Sarasota Key, Tracy 7202; Alva, Hitchcock Lee Co. 
