182 



GRAMINEAE 



6 inches long; glumes firm, nearly as long as the spikelet, gradually tapering 

 into an awned point ; lemmas short-awned. 



Open woods, rocky slopes and upland plains, in the region of Mt. Shasta, in the 

 Sierra Nevada and in the southern mountains; also in Yolo Co. (Blankinship 43) 

 and San Mateo Co. (Bolander 1512) ; extends north to Alaska and east to Labra- 

 dor and New England. The following specimens have thicker spikes with more 

 imbricated spikelets, the form (var. longifolium) to which the name A. pseudn- 

 repens has sometimes been misapplied: Woodland, Blankinship 43; Yreka, But- 

 ler 850; San Bernardino Mts., Hall 7659; Mt. Pinos, Hall 6418. 



Kefs. AGROPYRON TENERUM Vasey, Bot. Gaz. 10: 258. 1885; Davy in Jepson, Fl. W. Mill. 

 Cal. 76. 1901. Var. longifolium Scribn. & Smith, U. S. Dept. Agr. Div. Agrost. Bull. 4: 30. 

 1897. Triticum violaceum [Hornem. misapplied by] Thurb. in Wats. Bot. Cal. 2: 324. 1880. 

 Agropyron caninum L. var. tenerum Pease & Moore, Rhodora 12: 71. 1910. 



8. A. caninum Beauv. Culms erect. 1 to 3 feet high, without rhizomes; 

 blades flat, rather lax, 1 to 3 lines wide, scabrous; spike more or less nodding 

 at apex, rather dense, 3 to 6 inches long; spikelets 6 to 7 lines long; glumes 

 pointed or awned ; lemmas 3 to 5-nerved ; awn straight, or somewhat spread- 

 ing, once or twice the length of the lemma. 



Dry hillsides and mountain meadows, in the Sierra Nevada and southern 

 mountains, also in the Santa Lucia Mts. (Davy 7647, 7713) ; extends east to 

 Colorado and north to Alaska and Greenland. 



Refs. AGROPYRON CANINUM Beauv. Ess. Agrost. 102. 1812. Triticum caninum L. Sp. PI. 

 86. 1753; Thurb. in Wats. Bot. Cal. 2: 324. 1880. 



9. A. vaseyi Scribn. & Smith. Culms slender, 2 to 3 feet high, without rhi- 

 zomes; blades narrow, involute, erect, smooth; spike slender, 2 to 4 inches 

 long ; spikelets rather distant, 5 to 8 lines long ; glumes 3 to 5 lines long, acute, 

 but not awoied, thin, scarious at margin and tip, strongly 3 to 5-nerved ; lemmas 

 faintly nerved, terminating in a slender, finally horizontally spreading awn as 

 much as 3 4 inch long. 



Rocky or arid hillsides, northeastern California to Alberta. Montana and 

 New Mexico. 



Locs. Klamathon, Copeland 3542; Forestdale, Baker $ Nutting, Davy; Warner Mrs.. 

 Griffiths $ Hunter 464; Modoc Nat. For., Hatton 150; Jess Valley to Blue Lake, Modoc Co., 

 Griffiths 4" Hunter 402; Dixie Mts., Baker $ Nutting; Amedee, Davy. 



Refs. AGROPYRON VASEYI Scribn. & Smith U. S. Dept. Agr. Div. Agrost. Bull. 4: 27. 1897. 

 Triticum strigosum [Lessing, misapplied by] Thurb. in Wats. Bot. Cal. 2 : 324. 1880. The 

 specimen in the Gray Herbarium described by Thurber was collected by J. G. Lemmon in 

 ' ' Sierra, Nevada Co. ' ' 



10. A. scabrum Beauv. Culms 3 to 4 feet high, without rhizomes; blades 

 flat; spike 6 to 8 inches long; spikelets rather distant, about % inch long; 

 glumes about y inch long, about 7-nerved, short-awned ; lemmas about ' - 

 inch long, faintly nerved, terminating in a long stout spreading awn as much 

 as I 1 /-.* inches long. 



The only specimen seen is Bolander 's no. 6468, collected south side of Eel 

 Ridge. It agrees fairly well with a specimen from Hunter's River, New South 

 Wales, collected by the Wilkes Expedition, but differs from most of the 

 Australian specimens of A. scabrum in having longer glumes. It resembles 

 A. arizonicum Scribn. & Smith, which, however, has shorter glumes. The Cali- 

 fornia specimen is tentatively referred to the Australian A. scabrum until the 

 species can b.e more thoroughly studied. 



Refs. AGROPYRON SCABRUM Beauv. Ess. Agrost. 102. 1812; Davy in Jepson, Fl. W. MM. 

 Cal. 76. 1901. Triticum scabrum R. Br. Prodr. 178. 1810. Festuca sca^ra Labill. Nov. TIoll. 

 PL 1: 22. 1804. 





