A<il{«>STII>K.K. 



201 



tt'i" ;}-H cm. Ion;;, tlu' tiTiuiiiiil one soiiu'tiiiu's ]()-]'i ctn. Ion;;: 

 lowiT riivrt in twos or tlircus, tlio iippcr sin^li". Spikcli'ts with iin- 

 t'qnal I-ntTved ^flui.U'.s, llrrtt A-lO nun. lon^'. si-i^ond H-i:{ mm. long, 

 tlu' awns vi'i-y short; tlort't spotted, ^-U mm. Ion;,'; liitcral awns 

 *<pirally twisted helow when mature and dry, 7-i'.i mm. long, the 

 <entral one ii titird Ion;rer. 



Mearly related to .1. tlivhuloma Miehx. 



Illinois, /'(iftn-Ktiii lor U. S. Dept. Agrieni. 'i'.Vi; Minnesota, 

 Jl(ihini/er 24. 



Illinois to Minnesota. 



13. A. Floridana (("hajun.) Vasey, flmm. V. S. 21 (IH.S.'J). 

 StreptarltHc F/oridniid Chapm. Kl. S. States, 554 (IHtiO). 



Cidms simple, ereet. slender, GO cm. high. Sheaths hairy at 

 the throat; hiades smooth, lilirorm. l')--,'.") em. long. Panicle ereet, 

 narrow, slender, 'M) cm. long; rays mostly in pairs. Spikelets on 

 short pedicels, first glume T^'-IIJ mm. long, second 7-!t mm. long, 

 obtuse or l)ifid, with a very short beak ; lloret S mm. long; bent 

 awn l-"i cm. long. 



South Florida. /Umh/rff. 



14. A. purpurascens Poir. Kncyc Suppl. 1:40-3 (1810). r/nr- 

 taria affinis W. &. S. Syst. 'l: Mant. ".'10 ( ). 



An erect glabrous perennial, (»0-l".M) cm. high. Sheaths some- 

 times downy, longer than the internodes; ligule very short ; blades 

 about .") to a culm. •^(►-:>0cm. long, the lower portions tardily invo- 

 lute. Panicle exserted, purple and brown, sleiiiler. *~'0-4(icm. long; 

 rays solitary, in pairs or rarely in threes. Kin|»ty ghnnes each with 

 1 scabrous lu'rve. and a very short awn, first \'l mm. long, second 

 about 10 mm. long: lloret ol'ten spotted. 5-7 mm. long, the lateral 

 divergent awns 2 cm. long, the central one longer. 



New .lersey, Scribnrr for V. S. Dept. Agrieul. 250: ^[ichigan. 

 Clark 2020. 



New Hngland and Michigan to Texas; also West Indies. 



Var. depauperata N'asey, ined. Panicle slender; lirst and sec- 

 ond glumes T and 5 mm. long, ves[)ectively ; tloret 4 mm. long. 



Mississippi, Tn/ri/. 



Var. minor Vasey, Contrib. V. S. Nat. Herb. 3:40 (1892). 



