FESTUCE.E. r)45 



long. Anthers 0.6 mm. long. Distributed as P. ahbreviuta 

 Thurber. 



Colorado (Gray's Peak), Jones 714, 14,000 feet altitude. 



25. P. Chapmaniana 8cril)ii. Hull. Torr. Club. -Zl-.'M (1804). 

 Poa cristafa Chai)iii. Fl. S. States, aH-i (ISOO), not Walt. 



An ort'ct light griH'ii, nearly HUiooth annual. lO-'.M) cm. high. 

 Ligule 3 nun. long; blades of sterile shoots oiR'-([Uarter tlu^ length 

 of the euhn. Slieaths of the (uilnis ;? in number, usuidly shorter 

 than the interiiodes; blades ilat or ci)ndui)licate, acuminate or 

 abruptly pointed, 3-5 cm. long. \.^-i, mm. wide. Panicle obtuse, 

 linear or pyramidal, 2-S cm. long, rays in twos or threes, one of 

 the longest 2-4 cm. long, bearing spikelets on the outer half. 

 Spikelets shortly pedicellate or ahnost sessile, 3-;]. 5 mm. long, 

 3-5-flo\vered, narrowly or broadly elliptical or rhomboidal, joint of 

 rachilla 0.5 mm. long; em[»ty glumes siibcqual, ovate, subacute, 

 3-nerved (first rarely 1-nerved), second 2.2 mm. long; lloral glume 

 thin, webbed at base, pidjescent on marginal nerves and two-thirds 

 of the keel, the 4 lateral nerves obscure, 2.5 mm. long, conciive, 

 elliptical, the u})per fourth scarious; jialea thin, 1.7-2 mm. long, 

 pubescent on the lower two-thirds of the keels when seen through 

 a lens. 



^fuch like Poa (unina and likely to be confounded with it. 

 When compared, this species is more nearly erect, blades of sterile 

 shoots shorter, empty glumes narrower, with narrower scarious 

 margins, lloral glume oval (not ovate) and shorter. 



Tennessee, Srrihner; Mississippi (Tupelo & Starkville), Tracy; 

 Missouri, llifrhcock. 



Tennessee, Florida, ami Mississip})i. 



20. P. Bigelovii Vasey iS; Scribn. Vasey, Cat. Grass. U. S. SI 

 (1S85). /'. ainiH(t\i\v. sfn'c/d \'asey, Scril)!!. liull. Torr. Clul). 31 

 (1883). 



A glaucous annual or perennial; culms Ilat, green or jiurple, 

 20-70 em. high. Leaves of sterile shoots few. the l)la(les 2-4 cm, 

 long, those of the culms 3 in number, ilat or conduplieate, 3-10 

 cm, long, 1.5-2 mm. wide, apex acute (not abruptly acute as in /'. 

 annua); ligule 2 nan. long. Panicle linear, secund, very simple,. 



