267 
ORYZA, rice 
+Oryza sativa L., rice, p. 190 
ORYZOPSIS, mountain rice, rice grass 
Oryzopsis racemosa (Smith) A. Hitchc., black-seeded mountain 
rice, 
PANICUM, panic grass 
(see also BRACH 
DICHANTHELIUM, PASPALIDIUM) 
Panicum anceps Michaux, beaked panic grass, P- 229 
var. anceps 
P. capillare L., common witchgrass [S, M: incl. var. 
occidentale Rydb.] (Gould, 1975), P- 226 
P. dichotomiflorum Michaux, fall panic grass M: incl. var. 
geniculatum (Alph. Wood) Fern.] (Hitchcock, 1950), 
p- 
P. flexile (Gattinger) Scibner, wiry witchgrass, slender panic 
ass, p. 
P. gattingeri Nash, p. 226 
P. hians Elliott, p. 230 
+P. miliaceum L., broomcorn millet, proso millet, p. 228 
+P. obtusum Kunth, vine mesquite, p- 
P. philadelphicum Trin., Philadelphia witchgrass, p- 226 
var. philadelphicum 
var. tuckermanii (Fern.) Steyerm. & Schmoll 
P. rigidulum Bosc ex Nees, redtop panic grass [S: P. 2 
agrostoides Sprengel, P. stipitatum Nash; M: incl. £- 
stipitatum] (Gould, 1975), P- 229 
P. virgatum L., switch grass, p- 228 
i : brock 
S: Steyermark G: Great Plains Flora M: Mohlen 
