126 



MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



IFigure 155. — Poachaixii. Panicle, X 1; floret, X 10. (Lakela 2012, Minn.) 



41. Poa cMixii Vill. (Fig. 155.) 

 Culms erect or ascending, as much as 

 1 m. tall, soft, flattened, smooth and 

 shining; sheaths compressed, keeled, 

 glabrous, the lower somewhat 

 crowded; blades mostly 10 to 20 cm. 

 long, 4 to 8 mm. wide, flat or con- 

 duplicate, glabrous with scabrous 

 margins; panicles about 15 cm. long, 

 the slender spreading branches in 

 whorls of 5, spikelet-bearing above 

 the middle; spikelets 4 to 6 mm. long, 

 2- to 4-flowered, short-pediceled ; 

 lemmas 3.5 to 4 mm. long, acute, gla- 

 brous, or scabrous on the keel, dis- 

 tinctly 5-nerved. % — Rich woods, 

 Minnesota (Hunters Hill near Du- 

 luth, apparently indigenous); north- 

 ern Europe. 



5. Alpinae. — Perennials without 



creeping rhizomes; lemmas not 

 webbed at base, pubescent on 

 the keel or on the marginal 

 nerves, or both, sometimes also 

 pubescent on internerves. 



42. Poa fendleriana (Steud.) Va- 

 sey. Mutton grass. (Fig. 156.) In- 

 completely dioecious; culms erect, 



Figure 156. — Poa fendleriana. Panicle, X 1; floret, 

 X 10. (Eggleston 6463, N. Alex.) 



tufted, scabrous below the panicle, 30 

 to 50 cm. tall; sheaths somewhat sca- 

 brous; 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 4- to 6-flow- 

 ered, about 8 mm. long; glumes 

 broad, 3 to 4 mm. long; lemmas 4 to 

 5 mm. long, villous on lower part of 



