536 POACE>E. 



10. P. reflexa Y. & S. Vasey, Cat. Grass. U. S. 83 (1885); 

 Contrib. U. S. Nat. Herb. 1 : 276 (1893). 



A slender perennial, 50-70 cm. high. Leaves of culm 4 in 

 number, ligule 1-2 mm. long; blades 4-8 cm. long, 2.5-3 mm. 

 wide, nearly smooth, flat, abruptly pointed. Panicle open, pyram- 

 idal, 4-7 cm. long, rays often reflexed, the longest 5-8 cm. long, 

 bearing 3-4 spikelets near the apex. Spikelets purple, linear, 7-8 

 mm. long, 2-4-flowered, first glume 2.5-3 mm. long, 1-nerved, 

 second 3.3-4.3 mm. long, 3-nerved, oval, obtuse or acute, lowest 

 joint of rachilla 1.5 mm. long; floral glume slightly pubescent at 

 the base, 3-4.5 mm. long, oval, abruptly pointed; palea almost 

 as long as its glume. 



Utah, Tracy; Montana, >S'crj^»er 362 in 1883, Tweedy '^'H ^, 638; 

 Colorado, Wolfe 1144; New Mexico, Fendler 929. 



Wet meadows. 



11. P. alsodes A. Gray, Man. Ed. 2:562 (1856). P. nemora- 

 lis Torr. Fl. U. S. 1 : 111 (1824), not L. 



A soft smooth weak light-green tufted perennial, 30-80 cm. 

 high. Blades of sterile slioots 20-30 cm. long, 2.5-4 mm. Avide, 

 flat or conduplicate, acute or abruptly pointed, those of the culm 3 

 in number, ligule 1-1.5 mm. long, truncate, lacerate; blades 5-10 

 cm. long. Panicle often partially included by the upper sheath, 

 20-45 cm. long, slender, open, lanceolate, or loosely linear or oval, 

 rays slender, in fours to sixes, the longest 10-14 mm., bearing 

 scattered spikelets from the middle or above tlie middle. Spikelets 

 3.5-5.5 mm, long, 2-3-flowered, oval or linear-oval, joint of rachilla 

 0.5-0.7 mm. long, first empty glume 2-3 mm. long, ovate-lanceo- 

 late, 1-nerved, second ovate-lanceolate, 2.5-3.5 nmi. long, 3-nerved; 

 floral glume 3.5-4 mm. long, oval, acute, webbed at base, pubes- 

 cent or nearly smooth on the lower half of the keel, tlie tip 

 .scarious for one-fourth its length; palea linear, 2.5-3 mm. 

 lonff. keels nearly smooth. Plants from Grand Traverse and 

 Alcona counties, Michigan, have the keel of floral gkime nearly 

 smootli. Wet woods, New England, Alleghany Mountains to 

 Wisconsin. 



Vermont, Prinyle; Massachusetts. Faoron 10; New York, Clin- 



