GRASS FAMILY 107 



In the Sierra Nevada (Moffat Creek, Siskiyou Co., Butler 830) to Tehachapi 

 (Chase 5731) and in the Coast Ranges (Red Mt., Humboldt Co., Bolander 6469) 

 to Mendoeino Co. (Davy & Blasdale 5287) ; north to Washington. 



Var. jonesii Scribn. Differs in the more slender firm involute blades, and 

 smaller spikelets ; glumes about 4 lines long ; lemma about 3 lines long, the awn 

 % inch long, tending to be incurved, the pubescence shorter. Washington 

 and Idaho to California. Yreka, Butler 810; Sierra Nevada as far south as 

 Mariposa Co. (Bolander 4865) ; also in the mountains of San Diego Co. (Bran- 



degee 129). 



Refs. -STIPA LEMMONI Scribn. TJ. S. Dept. Agr. Div. Agrost. Circ. 30: 3. 1901. S. pringlei 

 Scribn. var. lemmoni Vasey, Contr. Nat. Herb. 3: 541. 1892, type from Plumas Co., Lemmon 

 5456. Var. JONESII Scribn. U. S. Dept. Agr. Div. Agrost. Circ. 30: 4. 1901, type from Emi- 

 grant Gap, Jones 3298. 



14. S. lettermani Vasey. Culms cespitose, slender, 1 to l l / 2 feet high; 

 sheaths smooth ; ligule very short ; blades crowded at base of plant, short, 

 slender, involute; panicle narrow, 3 to 8 inches long; glumes narrow, acum- 

 inate, 3-nerved, about 4 lines long; lemma narrow, 2~y 2 lines long, pilose; 

 awn very slender, about y 2 i ncn long, nearly smooth, twice-geniculate, the first 

 section short, about l 1 /^ lines long. 



California to Idaho and Colorado. 



Locs. Lincoln Valley, Sierra Co., Kennedy $ Doten 215; Truckee, Hitchcock; San Ber- 

 nardino Mts., Parish Bros. 1552. 



Refs. STIPA LETTERMANI Vasey, Bull. Torr. Club 13: 53. 1886. S. viridula Trin. var. 

 lettermani Vasey, Contr. Nat. Herb. 3: 50. 1892. 



15. S. minor Scribn. Culms few in a cluster, 2 to 3 feet high ; sheaths 

 smooth; ligule very short; blades flat or becoming involute, narrow, as much 

 as 1 foot long; panicle narrow, 6 to 8 inches long; glumes 3 lines long, 3-nerved, 

 slightly scabrous on the keels; lemma narrow, pilose, 2y 2 lines long; awn 

 about 1/2 inch long, nearly smooth, twice-geniculate, the first section iy 2 lines 

 long. 



High Sierra Nevada of central California; probably also in Mexico. Differs 

 from S. lettermani only in being larger, the blades more scattered, flat or 

 tardily involute, and the panicles longer. 



Locs. Summit Valley, Pringle; Yosemite Nat. Park, Bolander 5078, Hitchcock 3304, 3324; 

 Farewell Gap, Hitchcock 3393. 



Refs. STIPA MINOR Scribn. U. S. Dept. Agr. Div. Agrost. Bull. 11: 46. 1898. S. viridula 

 Trin. var. minor Vasey, CoHtr. Nat. Herb. 3: 50. 1892. S. viridula as described by Thurb. 

 in Wats. Bot. Cal. 2: 288. 1880, appears to include S. minor, S. lettermani, S. calif ornica and 

 S. lemmoni. 



15. ORYZOPSIS Michx. 



Spikelets 1-flowered, in narrow or open panicles. Glumes rather broad, 

 obtuse or abruptly acute. Lemma with a short obtuse callus, convolute, some- 

 what indurated, including the rather large palea, terminating in a simple slen- 

 der, usually short, deciduous awn. Perennials. Species about 15 in temperate 

 regions of the northern hemisphere. (Greek orusa, rice, and opsis, appearance.) 



Lemma smooth; spikelets numerous, 1% lines long; blades flat 1. 0. miliacea. 



Lemma pilose; blades involute. 



Branches of panicle and capillary pedicels divaricately spreading 2. 0. hymenoides. 



Branches of panicle and pedicels erect or ascending. 



Glumes about 2 lines long; lemma sparingly pilose 3. 0. kingii. 



Glumes 4 to 5 lines long; lemma densely long-pilose. 



Awn 3 lines long; culms 6 inches to 1 foot high 4. 0. webberi. 



Awn 6 lines long ; culms 1 to 2 feet high 5. 0. bloomeri. 



