478 
129. Panicum Xanthophysum. Gray. 
\ , . r * 
Culm simple, or at length branched near the base ; sheaths hairy; 
leaves lanceolate, very acute, not dilated at the ciliate-bearded clasping' 
base, smooth except the margin, strongly 9 to 11 nerved ; panicle long- 
peduncled, simple, contracted, the appressed branches bearing roundish- 
obvate spikelets ; lower glume ovate acutish, one-third to one-half the 
length of the nine-nerved upper one. Perennial ; flowers in June. 
Culms 12 to 15 inches high. Prairies and openings of Wisconsin. 
Plate 1. Figure 11. 
a spikelet. 
b lower glume. 
c upper glume resembling a palea. 
d lower palea. 
e palea of the abortive flower. 
f hairs on the leaves and sheaths. 
130. Panicum Pauciflorum. Gray. 
Culms upright, roughish; leaves lanceolate, rather faintly nine- 
nerved, hairy or smooth, fringed on the margin next the base with long 
and stiff spreading hairs, the sheaths bristly throughout with similar 
hairs ; panicle open, nearly simple, bearing fine tumid obovate spikelets. 
Perennial; flowers in June and July. Culms l to 2 feet high. Iowa, 
Illinois and Michigan. 
131. Panicum Dichotomum. Linnaeus. 
Syn. —P. nitidum, Lam. P. barbulatum and P. ramulorum, Michx. 
P. nodiflorum, P. pubescens, and P. laxiflorum, Lam. 
Culms at first mostly simple; leaves lanceolate flat, with few or in¬ 
distinct nerves; panicle compound, spreading, exserted; spikelets 
minute, on long peduncles, obvovate, mostly pubescent; lower glume 
roundish, one-fourth to one-third the length of the five to seven-nerved 
upper one. A very variable species. Perennial; flowers from June to 
August. Culms 8 to 20 inches high. Wisconsin, Illinois, Ohio, Michi¬ 
gan, and about Lake Superior. 
132. Panicum Depauperatum. Muhlenberg. 
\ * *, •. . m m ‘ »11 * > * j i i* ^i p,i o ■ / , j «r*y /** Ql * ^ i »j fli 
Syn. —P. rectum, Roem. & Schultz. P. involutum, Torr. P. stric- 
tum, Ph. 
