268 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
the summit; ligules about 1 mm. long, the hairs soft, rather sparse; blades spread- 
ing or reflexed, 1.5 to 3 cm. long, 2 to 5 mm. wide, thin and soft, sparsely pilose on 
both surfaces or glabrous above except for long soft hairs near the base; panicles 
short-exserted at least till after maturity, 2 to 3 cm. long, 
nearly as wide, the branches ascending; spikelets 1.4 mm. 
long, 0.7 mm. wide, elliptic-obovate, obtuse, glabrous, or 
minutely pubescent; first glume about one-fifth as long as 
the spikelet; second glume and sterile lemma both shorter 
than the fruit at maturity; fruit 1.25 mm. long, 0.7 mm. 
iis wide, elliptic. 
Antic een ae tr Autumnal form weakly spreading, the culms branching 
from the middle nodes after the maturity of the primary 
panicles, the branches exceeding the internodes; ultimate branchlets in small fasci- 
cles toward the summit of the branches, the reduced blades spreading and the small 
panicles mostly exserted ; winter rosette 
appearing early, the soft blades mostly 
2 to 3 cm., but sometimes as much as 5 
cm. long. 
This species is the only one of this 
group with spreading pilose pubescenc 
and manifest ligules. 
DISTRIBUTION. 
Boggy soil and shady, moist places, 
sometimes forming a rather dense car- 
pet, South Carolina and Tennessee to 
Florida and Mississippi. 
Fic. 296.—Distribution of P. curtifolium. 
SoutH Caroima: Aiken, Ravenel; Hartsville, Coker in 1909. 
Fiorina: Pensacola, Combs 525; Eustis, Holm 24, Nash 1507; Myers, Hitchcock 
867; without locality, Chapman. . 
TENNESSEE: Lookout Mountain, Biltmore Herb. 10715b (Biltmore Herb.). 
AtaBAMA: Sand Mountain, Biltmore Herb. in 1899; Auburn, Earle & Baker 1532, 
Hitchcock 1337, Tracy 3748 in part, 3752; Flomaton, Hitchcock 1058; Tuskegee, 
Carver 27, 41; Gateswood, Tracy 8421. 
Mississiper; Ocean Springs, Tracy 4598, 4599; Mississippi City, Hitchcock 1094, 
V 160. Panicum chamaelonche Trin. 
Panicum chamaelonche Trin. Gram. Pan. 242. 1826. Trinius states concerning the 
origin of his specimen, ‘‘V. spp. Am. bor. (TRATTINICK, ex. coll. Enslini).”’ The type, 
in the Trinius Herbarium, is the early branching form. _ 
Panicum nitidum minor[us| Vasey, Contr. Nat. Herb. 3: 30.1892. ‘‘Florida.”’ The 
type, in the National Herbarium, was collected by William C. Canby at St. Augustine, 
Florida, April, 1869, and is labeled ‘‘nitidum var. minor”’ in Dr. Vasey’s writing. 
This consists of several small tufts of vernal culms. 
Panicum baldwintt Nutt.; Kearney, U. 8. Dept. Agr. Div. Agrost. Bull. 1: 21. 
1895. The citation is as follows: ‘‘Panicum baldwinii Nutt. in Herb. Phila. Acad. 
(Panicum nitidum minor Vasey Contr. U.S. Nat. Herb. 3: No. 1, 30, 1892.)”’ No 
description is given. Since Nuttall’s herbarium name is taken up, this name should 
be considered a nomen nudum, and not based on the synonym cited. 
Panicum baldwinit Nutt.; Chapm. Fl. South. U. S. ed. 3. 586. 1897. Based on 
“Panicum baldwinii Nutt. (in Herb.)”’ and described. The type, in the Nuttall 
Herbarium, labeled ‘‘Panicum Baldwinii, Florida, Bald.”’ is a tuft of vernal culms 
beginning to branch, with mature and over-mature panicles. 
