602 POACK/K. 



Colorado (Veta Pass), Yascy in 1884. 



Tlio plants wore mixed witli tliose la])elled F. srahrella. 



21. F. dasyelada Hack. ined. 



A geniculate perennial. 20-40 cm. liigli. Shoatlis smooth, 

 shorter than the internodes; ligide very short, symmetrically biuu- 

 riculate; blades of sterile shoots involute or conduplicate, the ex- 

 treme apex obtuse, 10-15 em. long, 2 mm. M'idewheii sjjread, those 

 of the culm 13-4 in number and shorter. Panicle barely exserted, 

 ovoid or pyramidal, 7-12 cm. long, rays in twos, threes, and fours, 

 flat, with ciliate margins, the longest 5-7 em. long, bearing spikelets 

 on one side of the upper half or third. Spikelets elliptical-lanceolate, 

 2-llowered, 7 mm. long, joint of rachilla 1.5 mm. long; empty 

 glumes lanceolate, first 1-3-nerved, second 3-nerved, G mm. long; 

 floral glume scabrous, oval-lanceolate, 5-nerved, mm. long, in- 

 cluding the short teeth, awn 3 mm. long; palea linear, ciliate on 

 the keels, almost as long as its glume. Anthers 1.7 mm. long. 

 Ovary obovoid, apex pubescent. 



Utah, Parry in herb. Scribner; and Rocky Mountains. 



22. F. livida Willd. Spreng. Syst. 1:353 (180G). Browns livi- 

 dus H. B. K. Nov. (Jen. et Sp. 1 : 150, /. 089 (1815). Schedonorus 

 lividm R. & S. Syst. 2:707 (1817). Helkria livida Fourn. llemsl. 

 Biol. ("entr. Am. Bot. 3:582 (1880). 



Culms and leaves glabrous, the former 15-20 cm. high. Sterile 

 shoots numerous, the ligule 0.2 mm. long; blades involute, striate 

 5-sided, pungent-pointed, 2-5 cm. long, 0.6-0.8 nmi. diam. Pan- 

 icle simple, rays single, the longest 2-2.5 cm. long, including the 

 3-4 spikelets. Spikelets puri)le, 10-12 mm. long, 4-flowered, first 

 empty glume often 2-nerved, 10-11 mm. long, second 1-2 mm. 

 longer; floral glume, elliptical, acute at both ends, 9 mm. long; 

 palea 3-8 mm. long, smooth. Grain flat. Anthers elliptical, O.S- 

 0.9 mm. long. 



Mexico, Prinyle 4304. In the crater of a volcano 14,000 feel 

 altitude. 



23. F. amplissima Rupr. Bull. Acad. Brux. (II.) 9:236 (1842). 

 Culms rather stout, 30-180 em. high, subscabrid. Leaves of 



