423 424 



tinct from S. setigera." Tex, NM. when young, slender branches in pairs- 



S. Bt3MB3.ITACEA Pursh, Fl Am2:72S. pedicels sh'er than spkt; empty gm 12-18 



iocoma cuspidata. mm Ig, Ig-acuminate; flg gm 10 mm Ig 



S. IffEESIANA Triii & Rupr, Mem ac silky-hairy on nerves; awn geniculate 



Petersb sr 6, sci nat 5.27. = S. setigera above middle, bent again, twisted and 



fide. B 2:_ pubescent below, 6-10 cm Ig; anth 



S. OCCIDENTAZiIS Bolander, Cal ac pr bearded at apex. 



= S. comata fide. B 2:285, 286. Baja mts (Or 1190); Cal.; Utah; Arizona. 



STIPA OCCIDENTALIS Thurber. S.SIBIBICA Thurber B 2:287 (not Lam) 



Thurber, ex Wat bot King 380. B 2:285. = S. Bloomeri Bolanderfide Vasey, CNH 



Ore. Vasey, CNH 3:50. 3:54. 



Cu slender, 1-2 : hi, somewhat sea- S. SPASTEA Hook Fl Bor Am 2:237 (not 



brous, more or less pubescent at nodes; Trin) S. viridula fide. B 2:288 



radical Ivs 2-4' Ig, those of cu sh'er, all STIPA SPECIOSA T-R 



te, rigid and rough; sheaths sh'er Trin & Rupr, Mem ac Peters! sr 6, sci 



than internodes; ligule conspicuous, 2-3" nat 5:45 (1342). Cal, Chili. Ab 31 B 



erate; panicle 3-6' Ig, base oft in- 2:i:84. Vasey CNH 3:52. 



. contracted; :ays mostly erect, Cruz; Rosa; Choilas (Or 



lower in 2's or 3's and few-fid, upper Per; cu tufted, erect, 2-5 dm hi; 



solitary and 1-fld: lower gm 5" Ig, 3- or sheaths sh'er than internodes, upper- 



- served, somewhat exceed- most inflated; basal Ivs % as Ig as cu, 



nerved upper one; floral gm scabrous, cu Ivs com ), 5-15 cm Ig', 



brownish when ripe, pubescent closely involute; panicle oft somewhat 



with -appie Irs, especially below; included, spk-like, 6-20 cm Ig. branches 



-h a sh, distinct com in pairs, bearing 1-3 spkt; empty 



< of hairs; awn l 1 /^' Ig. twice bent gm nearly equal, hyaline , acuminate, 



and plumose to upper ganiculation, with about 16 mm Ig; flg gm silky-pubescent, 



rather coarse hairs, less than a li Ig be- 8-12 mm Ig, 2-toothed at apex; awn 3-4 



low and sh'er above: paiet *4 sh'er than cm Ig, geniculate below middle, the 



floral gm; anth naked. twisted portion pilose with w hairs 3-6 



. Bernardino to Wash.; Nevada. Ig. 



Variety MONTANA Merrill & Davy. 5. STIiMAn Bolander, Cal ac pr 4:169. 



"A slender densely tufted form. 2-5 dm B 2:287, Curran, Cal ac b 1:151. Vasey 



high with strict few-fl'd panicles and CN 3:31. So Cal. 



prominent twice-geniculate awns, 3-3.5 Cu tufted, stout, 3-5 hi; geniculate be- 



C7v. long which are ciliate throughout low, smooth, except the pubescent nodes; 



with spreading or ascending w hairs radical Ivs 12-18' Ig, those of cu (4 or 5) 



about 1 mm long." Merrill & Davy, Univ much sh'er, all glau, involute, at least at 



Cal pub bot 1:62. Jac (Hall 2326). the Ig-attenuated apex, the lower 3-4" 



STIPA PARJSHII Vasey. wide at base, mostly smooth below sca- 



Vasey. bot gaz 8:32. Ha 63. Ab 31. brous above and on margins; ligule min- 



Cu tufted, Ify below, 3-4.5 dm hi, ute: sheaths loose, sh'er than internodes. 

 rather stout; sheaths smooth Ig'er than striate, smooth, slightly bearded at 

 internodes, margins of throat pubescent; throat; panicle 5-10' Ig, nar and spk-like, 

 blades involute, rigid, smooth below interrupted below, near w and lustrous, 

 scabrous above, lower ones 12-18 cm Ig, axis puberulent with an incomplete pil- 

 upper 8-10 cm Ig; uanicle included at ose ring at nodes; rays crowded and fas- 

 base by somewhat inflated upper sheath, ciculate, more or less united below, 1- to 

 cm Ig, open; lower branches in 3's, few-fid; gm nearly equal, about 9" Ig, 

 upper in 2's or single, rather few fld; acuminately bristle-pointed, membrana- 

 empty gm linear-lanceolate, smooth, 1st ceous-hyaline, lower 3, upper more or 

 12-16 mm Ig, 2d about 2 mm sh'er; flg less 5-nerved at base; floret 5" Ig, with 

 gm about 7 mm Ig, silky with w hairs a sh, 1-sided, w, hairy callus; lower 

 oft 5 mm Ig, 2-toothed; awn 16-20 palet herbaceo-chartaceous, distinctly 

 mm Ig, smooth below, scabrous above. 3-nerved, sparsely pubescent thruout, the 



S Ber (Parish); Cantilles (Or 1161); Ari- division of the 2-cleft tip nearly 1" Ig; 



zona. upper palet similar; awn inserted below 



New Mexico; Arizona, the tip of palet, 12-15" Ig, tortuous 



S. PASVTFZiORA Nutt. Gen 1:58 not slightly bent above middle, scabrous; sta 



Desf. = S. viridula fide. B 2:288. 3; anth Ig, mucronulate. Blue canon 



S. FEZTHATA L. sp pi 78. B 2:284. Sierra Nevada. Cal. 



Variety NEO-MEXCICANA Thurber, bot 3. TE2TACISSXMA L, Cent pi 1:6. Eu 



Mex bound ined, fide. B 2:285. Af. B 2:284. 



S. SCBXBZTERX Vasey, Torr cl b 11:125. S. VASEYI Scribn, D-A argos b 11:46 



CNH 3:52. NM. Ar. 1898). Ha 63. Sleepy grass. 



STIPA SETIGERA Presl. S. VIBIDUZ.A Trin. 



Presl, Rel Haenk 1:226. B 2:286 Da 19. Br 1:205, Cruz. Ab 31. Da 19. B 2:288. 



Ab 31. Vasey, CNH 3:53. Br 1:205, Cu stout, strict, simple. 4-7 dm hi; 



Cruz; 218, Rosa. sheaths much sh'er than internodes; 



Cu 3-9 dm hi, tufted, rather stout, blades smooth or scabrid, involute se- 

 pubescent at nodes; sheaths hairy at taceous at apex; basal Ivs about l-3d as 

 throat, the lower sh'er than internodes; Ig as cu, cu Ivs 3-4, 2-6 mm wide, the 

 basal Ivs l-3d as Ig as cu; cu-lvs flat, upper 3-6 cm Ig; ligule sh with some 

 4-6 mm wide, upermost nearly equaling hairs at throat; panicle exserted, nar, 

 Panicle; ligule about 2 mm Ig. truncate; 12-40 cm Ig, the sh erect branches in 2's 

 panicle 10-25 cm Ig, mostly included be- or 3's; empty gm nearly equal, ovate- 

 low, loose, flexuous, more or less secund lanceolate, bristle-pointed, 6-12 mm Ig; 



