HITCHCOCK AND CHASE—NORTH AMERICAN PANICUM. 177 
V 909. Panicum bicknellii Nash. 
Panicum bicknellu Nash, Bull. Torrey Club 24: 193. 1897. ‘“‘The type specimens 
were collected by Mr. Eugene P. Bicknell * * * in Bronx Park [N. Y.] on July 
21, 1895.’’ The type, in Nash’s herbarium, is the early branching form of the plant. 
The spikelets are sparsely pubescent. 
Panicum nemopanthum Ashe, Journ. Elisha Mitchell Soc. 15:42. 1898. ‘Type 
material collected by the writer April, 1895, in the Penitentiary woods, Raleigh, 
N.C.’ The type could not be found in Ashe’s herbarium, but a specimen from the 
type material labeled in Ashe’s handwriting is in the National Herbarium. This isa 
single vernal culm with an immature, partly included panicle; the spikelets are 
nearly or quite glabrous. 
Panicum bushii Nash, Bull. Torrey Club 26: 568. 1899. ‘‘Collected by B. F. Bush, 
in dry ground, in McDonald Co., Missouri, July 24, 1893 no. 413.” The type in the 
Columbia University Herbarium consists of a small tuft of branching culms, the pri- 
mary panicles devoid of spikelets; most of the primary nodes sparsely pilose, most of 
the secondary ones glabrous; the spikelets glabrous. 
Although the types of P. nemopanthum and of P. bushi have glabrous spikelets, 
later collections of the species in the Peniten- 
tiary woods, Raleigh (Ashe & Chase 3092) and 
from B. F. Bush have pubescent spikelets. 
These two types are exceptional specimens. 
DESCRIPTION. 
Vernal form bluish green; culms erect or as- 
cending, 30 to 50 cm. high, glabrous, or the low- 
ermost portion puberulent, nodes sparsely 
bearded or glabrous; sheaths glabrous or the 
lower sparsely villous especially above the nodes; 
blades stiffly ascending, or somewhat spreading, 
elongated, 8 to 15 cm. long, 3 to 8 mm. wide, the uppermost usually longest, narrowed 
toward the base, there usually ciliate with a few stiff hairs; panicles ovoid, 5 to8cm. 
long, about two-thirds as wide, the branches ascending, bearing few long-pediceled 
spikelets, these 2.3 to 2.8 mm. long, 1.1 to 1.2 mm. wide, oblong-elliptic, sparsely 
pubescent or rarely glabrous; first glume about one-third the length of the spikelet, 
subacute; second glume and sterile lemma equal, covering the fruit at maturity; fruit 
2mm. long, 1.1 mm. wide, elliptic, subacute. 
Autumnal form erect, branching from the middle nodes, forming a loose, bushy 
crown of stiffly ascending blades not much reduced and overtopping the narrow, 
few-flowered panicles. 
The long upper blades in this species 
are noticeable. Vernal specimenssome- 
times resemble P. werneri. 
One specimen, Bush 3246, has pilose 
sheaths and scattered long hairs on the 
blades. “azote FSBO a, BN parborn,| \ 
Wick 
C“STSTRABUTION. | 
Dry, sterile or rocky woods, Connect- 
icut to Georgia and Missouri. 
Connecticut: Norwich, Graves 15 
in 1899. Fic. 173.— Distribution of P. bicknellii. 
New York: Bronx Park, Bicknell 
in 1895; Cedarhurst, Bicknell in 1903; Rockville Center, Bicknell in 1906; 
Woodmere, Bicknell in 1904; Rockport, Bicknell 1905. 
41616°—vo1t 15—10——12 
Fig. 172.—P. bicknellii. From type 
specimen. 
& 
