AtJUOSTIDK.K. S'iH 



In carefully raisiiij,' seedlings of many typioal awnod specimorH 

 of .(. nniiiKi, Dr. .Jenkins, of Conneotieut, foiintl that only a small 

 per ecjit of them possessed awns. This being the case, what hin- 

 ders uniting A. rnfi/((ris with A. vaninn't I leave them as otiiors 

 Inivu left them, thinking it best to give the subject further atten- 

 tion before uniting them. 



(i. A. setifolia Fourn. llomsl. Hiol. Ccntr. Am. liot. 3: 55 1 



(iSHO). 



A tufted erect i)erennial, -10-CO cm. high. Leaves of sterile 

 shoots few, those of the culm 3, ligule decurrent, 1 ;.* mm. long; 

 blades stri(!t, (iliform, involute, scabrous, 20-'45 cm. long. I'anicle 

 thin, ovoid, pur[tlish, 10-14 cm. long; raya in twos, threes, and 

 lives, the longest 5-0 cm. long, hearing a few spikelets on the outer 

 two-fifths. S[»ikelets ;j mm. long; empty glumes 8ul)e(|ual, ellip- 

 tical-lan(!eolate when spread; floral glume :.'.'i mm. long, liuncate, 

 with .'lexcurrent nerves, the twisted atul bent awn projecting '.\ mm. 

 above its glume; i)alea 0. Very closely related to A. cuitina and 

 perhaps merely a variety of that species. 



Found at an altitude of 10,000 feet. 



Mexico (Oaxaea), Priiujle 4895. 



7. A. inflata Scribn. ined. 



A dwarf perennial, 4-10 cm. high. Siieaths smootli, the upper 

 inflated; ligule about 1 mm. long; blades erect, flat. i)ungent- 

 pointed, 2-5 cm. long, 2-3 mm. wide. Panicle partially included, 

 spikelike, 1.5-5 cm. long, 4-('tmm. diam. Spikelets 2.5 mm. long; 

 empty glumes e(pial or subcqiud, each bearing a short bristle; floral 

 glume l.O mm. long, with a very few short hairs at the base, broad, 

 truiunite, 4-toothed, 5-nerved below, the awu attached near the 

 middle and about 4 mm. long; palea 0. 



British Columbia (Vancouver Islaiul). }f(tconn 258 in 1893. 



8. A. microphylla Stend. Syn. PI. Gram. 164 (1855). 

 Annual; culms erect, 30-TO cm. high. Sheaths smooth or 



scabrid, shorter than the Internodes; ligule decurrent, 3-5 mm. 

 long; bladeserect, flat or involute, scabrous, 0-20 cm. long, 3-4 mm. 

 wide; blades of sterile shoots shorter and narrower. Panicle much 

 exserted, erect, dense, iuterru[)ted, pale green and tinged with 



