MANUAL OF THE GRASSES OF THE UNITED STATES 119 



spikelets 2- to 4-flowered, 3 to 4 mm long; lemmas 2.5 to 3 mm long, 

 webbed at base, pubescent on the keel and marginal nerves and more 

 or less pubescent on the internerves. 91 Rich, moist, or rocky 

 woods, New York to Wisconsin, south to Florida and Texas (fig. 203). 

 Sheaths pubescent in a specimen from St. Louis, Mo. 



30. Poa reflexa Vasey and Scribn. NODDING BLUEGRASS. (Fig. 

 204.) Culms solitary or in small tufts, erect, 20 to 40 cm tall; blades 



FIGURE 199. Poa occidentalis. Panicle, X 1; floret, X 10. (Standley 4344, N.Mex.) 



rather short, 1 to 4 mm wide; panicle nodding, 5 to 15 cm long, the 

 branches naked below, solitary, in pairs, or in threes, the lower usually 

 reflexed, sometimes strongly so; spikelets 2- to 4-flowered; lemmas 

 about 3 mm long, oblong-elliptic, webbed at 

 base, villous on keel and marginal nerves, 

 sometimes on intermediate nerves. <4 

 Open slopes and alpine meadows, 2,000 to 4,000 

 m, Montana to eastern British Columbia, south 

 in the mountains to New Mexico and Arizona 

 (fig. 205). 



31. Poa wolfii Scribn. (Fig. 206.) Culms 

 tufted, erect, 40 to 80 cm tall; sheaths slightly 

 scabrous; blades crowded toward the base of the culms, mostly 1 to 2 

 mm wide; panicle drooping, 8 to 15 cm long, the branches ascending, 

 bearing a few spikelets toward the ends, the lower mostly in pairs ; 

 spikelets 2- to 4-flowered, 5 to 6 mm long; lemmas 3.5 to 4.5 mm 

 long, acute, webbed at base, pubescent on the keel and marginal 

 nerves, the intermediate nerves distinct. 2t Moist woods, Ohio 

 to Minnesota and Missouri (fig. 207). 



FIGURE 200. Distribution of 

 Poa occidentalis. 



