GRASS FAiMILY 107 



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

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

 to Mendocino Co. {Davy tf- Blasdah 5287) ; north to Washington. 



Var. jonesii Seribn. 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). 



Eefs.— Stipa lemmoni Scribn. U. S. Dept. Agr. Div. Agrost. Circ. 30: 3. 1901. S. pringlei 

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

 545(). 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 lyo 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, 2i/2 lines long, pilose; 

 awn very slender, about Vi; inch long, nearly smooth, twice-geniculate, the first 

 section short, about l^A lines long. 



California to Idaho and Colorado. 



Locs. — Lincoln Valley, Sierra Co., Kennedy tj- Doten 21.5; Truckee, Eitchcoel- ; San Ber- 

 nardino Mts., Parish Bros. 1.552. 



Befs. — Stipa lettekmani Vasey, Bull. Torr. Club 13: 53. 1886. 5. 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, 2yo lines long; awn 

 about % inch long, nearly smooth, twjce-geniculate, theJirst section II/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, Fringle ; Tosemite Nat. Park, Bolander 5078, Bitehcock 3304, 3324; 

 Farewell Gap, Hitchcock 3393. 



Kefs. — Stipa minor ScrHin. U. S. Dept. Agr. Div. Agrost. Bull. 11: 46. 1898. S. viridula 

 Trin. var. minor Vasey, CoBtr. 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 orniea and 

 S. lemmoni. 



15. ORYZOPSIS Michx. 

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

 obtuse or a))ruptly 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 nortliern 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. hj/menoides. 



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. webheri. 



Awn f) lines long ; culms 1 to 2 feet high 5. 0. bloovieri. 



