A(J1U)STIL)E.K. 223 



90 cm. high. Sheaths hjii<,'er than the internodes; upper ligule 

 less than 1 mm. hmg; blades of the sterile siioots few, those on the 

 culms 7 in nunihcr, rigid, iuvohite, the middle ones 15-5J5 cm. 

 long, the upper about 12 cm. long. Panicle narrow, thin, inter- 

 rupted, 10-20 cm. long; rays in fours, lives, and sixes in distinct 

 half whorls, the longest ray 7 cm. long, Jlower-hearing above the 

 middle. Empty glumes hyaline, tinged with iturjtle, eijual, or the 

 lower a little longer, 7-1) mm. long, 3-nerved, the lateral nerves 

 merging into the central one before reaching the middle; iloret 

 pubescent, narrow, 5 mm. long, including the blunt callus ami the 

 crown of short hairs; awn twice bent. 15-50 mm. long; ])alea 

 pubescent, 2.5 mm. long. Stamens )]; anthers pencil-tufted. 



Mexico, PriiKjlc IJSo m is.S."). 



Distributed as Sfi/xi, without a specific name. 



19. S. Hassei Vasey, Contrib. V. S. Xat. Herb. 1 : 2G7 (1893). 



Culms very slender, erect, densely tufted, bran(;]iing below, 30- 

 45 cm. high. Sheaths narrow; ligule short; blades setaceous, 

 10-20 cm. long. Panicle open, luirrow, erect, 5-7 cm. long, rays 

 mostly in twos and threes, the longest 3 cm. long, iiaked below. 

 Em[)ty glumes linear-lanceolate, sube(iual, about 5 mm, long, first 

 1-3-nerved. second 3-nerve(l: stijte short, bearinga few sliort hairs; 

 floral glume thin. al)out 4.5 mm. long, 4-nerved, the awn 10-18 

 mm. long, twisted below and bent above tlie middle; palea about as 

 long as its glume. (Jrain obhmg, about 2 mm. long Nearly allied 

 to S. vminens Aiulersoni Vasey. 



California (Santa Monica), Dr. 11. E. ]lti,ssv, for whom Dr. 

 Vasey named it. 



47. (110). OryzopbiS Michx. Fl. P.or. Am. 1:9 (1803). 

 DiUpijrum liafin. Med. Ke[)OS. \. V. 5:352 (1808). J'i))(<i///en(m 

 Beauv. Agrost. 17, /. 'k f. 10. 11(1812). r/w//>/e Trin. Fund. 

 Agrost. 109 (IS-JO). Cariiovhhni Spreng. Syst. 4: Cur. Post. 22, 30 

 (1827). Pip/ocJupfium .1. & C. Presl, Ifel. lltenk. 1:222. (1830). 

 A7f.s.sW/« ¥.. Desv. C. Gay, Fl. Cliil. 6:2(J3. /. 7J, /. 1(1853). 

 Fendlcrin Steud. Syn. PI. Gram. 419 (1855). 



Si>ikelets 1-tlowered, usually ovoid or oblong, paniculate, rachilla 

 articulate above the lower glumes, not produced above the floret, 



