210 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Culms leafy below, branching 
from base and lower nodes; 
Maine to Minn.......... 132. P. subvillosum. 
Culms evenly leafy, branch- 
ing from upper nodes; 
Pacific slope..........-. 134, P. pacificum. 
Upper surface of blades appressed- 
pubescent or pilose toward the 
base only; spikelets 1.6 to 1.8 
mm. long; autumnal form not de- 
cumbent-spreading, 
Blades stiff, erect..................124. P. huachucae. 
Blades lax, spreading............... 124a. P. huachucae  sil- 
vicola. 
Spikelets 2.2 mm. or more long. 
Spikelets 2.2 to 2.4 mm. long. 
Pubescence on culms horizontally *preading: autum- 
nal form freely branching............. ..187. P. villosissimum. 
Pubescence on culms appressed or asce nding: autum- 
nal form rather sparingly branching. 
Upper internodes shortened, the leaves approxi- 
mate, blades often equaling the panicle; 
pubescence sparse and stiff. ....2..2..... 140. P. scoparioides. 
Upper internodes not shortened, the copious 
pubescence silky............2........... 138. P.  pseudopubes- 
cens. 
Spikelets 2.7 to 2.9 mm. long. 
Culms stiff; blades conspicuously ciliate; southern 
Atlantic coast........2..22.000000002022220-. 139. P. ovale. 
Culms weak; blades not ciliate; Pacific coast........ 141. P. shastense. 
121. Panicum meridionale Ashe. 
Panicum meridionale Ashe, Journ. Elisha Mitchell Soc. 15:59. 1898. ‘North Caro- 
lina, Chapel Hill in June, 1898; and Jonas Ridge, Burke Co., June, 1893. * * * 
Dry rocky woods.”’ The type could not be found in Ashe’s herbarium. In the 
National Herbarium are two specimens, one from Chapel Hill and one from Burke 
County, collected by Ashe and labeled in his writing as this species. The first speci- 
men is a tuft of very slender vernal culms, each bearing but three distant leaves, with 
panicles 2 to 3.cm. long, This specimen does not agree so well with the description 
as the Burke County plant, which is therefore chosen to represent the type. In this 
the culms are numerous, less delicate, erect, 10 to 15 cm. high. The spikelets are 
described as glabrous, but in both specimens they are minutely pubescent. 
Panicum filiculme Ashe, Journ. Elisha Mitchell Soc. 15: 59. 1898, not Hack. 1895, 
“Dry soil, middle North Carolina to Georgia in the Piedmont plateau region. * * * 
North Carolina: Ashe; Chapel Hill, 1898. Georgia: Small; Stone Mt., Aug. 1895.” 
The type could not be found in Ashe’s herbarium, In the National Herbarium is a 
specimen from Stone Mountain, Georgia, collected by Ashe, which answers to the 
description. The culms are erect, slender, 12 to 20 cm, high, with small panicles 
about 2cm. long. The culms are the early autumnal form with a few erect fascicles 
of secondary branches. This specimen differs somewhat in aspect from the type of 
P. meridionale, but they are forms of the same species. 
? Panicum microphyllum Ashe, Journ. Elisha Mitchell Soc. 15: 61. 1898. ‘‘Col- 
lected by the writer June, 1898, at Chapel Hill, N. C., in moist sunny woods.’’ The 
