MANUAL OF THE GRASSES OF THE UNITED STATES 125 



spikelets 2- to 4-flowered, about 4 mm long; glumes lanceolate, acute, 

 shorter than the first floret; lemmas 2.5 to 3 mm long, usually bronzed 

 at the tip, webbed at base, yillous on the keel and marginal nerves, 

 the intermediate nerves faint. 91 Meadows and moist 



open 



FIGURE 218 Poa palustris. Panicle, X 1; floret, X 10. (Suksdorf 7022, Wash.) 



ground, at low and medium altitudes, Newfoundland and Quebec, 

 south to Virginia, Missouri, Nebraska, New Mexico, and California 

 (Sierra Valley) (fig. 219); Eurasia. 



39. Poa interior Rydb. INLAND BLUEGRASS. 

 (Fig. 220.) Culms erect from a usually densely 

 tufted erect base, commonly rather stiff, often 

 scabrous below the panicle, 20 to 50 cm tall; 

 sheaths slightly keeled or terete; ligule evident 

 but usually less than 1 mm long; blades 1 to 2 

 mm wide; panicle narrowly pyramidal, 5 to 10 

 cm long, the branches ascending; spikelets 

 about as in P. palustris. 91 Grassy slopes 



and open woods at me- 

 dium altitudes, usually 



not extending much 



above timber line, Quebec 



to British Columbia and 



Washington, south to 



Vermont, Michigan, 



Minnesota, western 



Nebraska, New Mexico, 

 and Arizona (fig. 221). 



4. Alpinae. Perennials without creeping rhi- 

 zomes; lemmas not webbed at base, pubes- 

 cent on the keel or on the marginal nerves, 

 or both, sometimes also pubescent on 

 internerves. 



40. Poa fendleriana (Steud.) Vasey. MUTTON 



GRASS. (Fig. 222.) Incompletely dioecious; culms erect, tufted, sca- 

 brous below the panicle, 30 to 50 cm tall; sheaths somewhat scabrous; 

 ligule less than 1 mm long, not noticeable viewed from the side of the 

 sheath; blades mostly basal, folded or involute, firm and stiff; panicle 

 long-exserted, oblong, contracted, pale, 2 to 7 cm long; spikelets 5- 



FIGURE 219. Distribution of 

 Poa palustris. 



FIGURE 220. Poa interior. 

 Panicle, XI; floret, X 10. 

 (Clements 297, Colo.) 



