242 



POACEAE 



6. Agropyron parishii Scribn. & Smith. 

 Parish's Wheat-grass. Fig. 572. 



Agropvron parishii Scribn. & Smith, U. S. Dept. Agr. Div. 

 Agrost. Bull. 4: 28. 1897. 



Culms 1-1.5 meters tall, without rhizomes, the 

 nodes pubescent ; blades flat ; spike narrow, as much 

 as 30 cm. long ; spikelets narrow, distant, mostly 

 shorter than the internodes of the rachis, about 2 

 cm. long; glumes about 1.5 cm. long, several-nerved, 

 acute, more than half as long as spikelet ; lemmas 

 smooth, faintly nerved, short-awned or awn-pointed. 



Only known from California, Pico Blanco, Monterey 

 County (Davy), San Bernardino Mountains (Payish). 



7. Agropyron inerme (Scribn. & Smith) 

 Rydb. 



Great Basin Wheat-grass. Fig. 573. 



Agropvron di'^crgens inerme Scribn. & Smith, U. S. Dept. 

 Agr. Div. Agrost. Bull. 4: 27. 1897. 



Agropyron spicatum inerme Heller, Cat. N. Am. PI. ed. 2. 3. 

 1900. 



Agropyron inerme Rydb. Bull. Torrey Club 36: 539. 1909. 



Culms tufted, without rhizomes, erect, slender, 

 glabrous, 50-100 cm. tall ; sheaths smooth ; blades 

 slender, soon involute, pubescent on upper surface, 

 scabrous below, especially toward the tip ; spike 

 slender erect, 15-20 cm. long, the spikelets about as 

 long as the rachis joints; spikelets 1-1.5 cm. long; 

 glumes acutish but not long-acuminate, 5-8 mm. 

 long; lemmas smooth, scarcely nerved, obtusish, 8- 

 10 mm. long. 



Dry plains and hills, in the Arid Transition Zone; British 

 Columbia to eastern Oregon, east to Utah. June-July. Type 

 locality: Idaho. 



8. Agropyron tenerum \'asey. 

 Slender Wheat-grass. Fig. 574. 



Agropyron tenerum Vasey, Bot. Gaz. 10: 258. 1885. 

 Agropvron violaceum major Vasey, Contr. U. S. Nat. 



Hei^b. 1: 280. 1893. 

 Agropvron tenerum longifolitim Scribn. & Smith, U. S. 



Dept. Agr. Div. Agrost. Bull. 4: 30. 1897. 



Agropyron pseudorepens Scribn. & Smith, U. S. Dept. 

 Agr. Div. Agrost. Bull. 4: 34. 1897. 



Agropvron canimim tenerum Pease & ]\Ioore, Rhodora 

 12: 71. 1910. 



Culms erect, tufted, 60-120 cm. tall, without 



rhizomes; blades narrow, flat or involute; spike 



cylindrical, slender, erect, 10-15 cm. 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 

 Transition and Upper Sonoran Zones; Alaska to southern 

 California, east to Labrador and Colorado. June-Aug. 

 Type locality: Fort Garland, Colorado. 



