G R A M I N E Jl. 483 



3. Stipa comata, Trin. & Rupr. 



Stipa comata, Trin. & Rupr. Stipere, p. 75. 



S.juncea, Nutt. Gen. 1, p. 58. 



S. capillata, Hook. Fl. Bor.-Ani. 2, p. 37. 



Hab. Okanagan and north branch of the Columbia River. 



4. Stipa occidentals, Sp. Nov. 



Panicula contractu, radiis infimis bi-tritematis paxicifloris, supremis 

 solitariis imifloris ; glumis lanceolatis acuminatissimis ; flosculo albo- 

 piloso brevi-coronato glumis paulh breviore ; arista bigeniculata, in- 

 feme breviplumosa ; antheris nudis. 



Stipa occidentalis, Thurb. ; Watson in U. S. Geolog. Expl. of 40th JParallel, p. 380 ; 

 Bolander in Proc. Cal. Acad. Sci. 4, p. 169. 



Hab. North branch of the Columbia and Okanagan. Since col- 

 lected in California and Nevada by Bloomer, Bolander, and Watson, 

 and on the Colorado of the West by Newberry. — Culms slender, 1 to 

 4 feet high, purplish, minutely scabrous, pubescent at the nodes. 

 Radical leaves 4 to 8 inches long, those of the culm shorter, involute, 

 filiform, rigid and rough ; sheaths shorter than the internodes ; ligule 

 2 to 3 inches long, lacerate. Panicle 3 to 6 inches long, the base 

 often included in the upper sheath, few-flowered ; rays mostly erect, 

 the lower 1-2-, rarely 3-flowered; spikelets short-pedicelled. Lower 

 glume 5 inches long, 5-nerved, the upper shorter and indistinctly 3- 

 nerved. Lower palet 3 to 3 i inches long, brownish at maturity, 

 pubescent with appressed hairs, especially below, with a short but 

 distinct corona and a brief acute bearded callus; the upper palet 

 three-quarters the length of the lower. Awn li inches long, mostly 

 twice bent and plumose to the upper genie ulation with rather coarse 

 hairs, less than a line long below and shorter above. Bolander 

 remarks (Joe. cit.) that this species has a wide range and is very vari- 

 able ; that on loose sandy soil at 4000 or 5000 feet altitude it assumes 

 a reed-like appearance, but at high elevations and in rocky places is 

 much reduced in size. He also notes that in the larger specimens the 



