100 University of California Puhlications in Botany [Vol.9 



Sitanion cinereum J. G. Smith (^.c, p. 14), described from "Reno, 

 Nev,," is said to be the common grass of the glacial meadows on Mt. 

 Shasta ;^^ no specimens have been seen from the Sierra. From the 

 description, it would appear that it differs from the var. calif orniciim 

 only by a somewhat shorter awn. 



11. DANTHONIA 



Sheaths pubescent; culms often geniculate; spikelets in a loose panicle 



1. D. americana 



Sheaths glabrous; culms erect; spikelets aggregated 2. D. intermedia 



1. Danthonia americana Scribn., U. S. Dept. Agr., Div. Agrost. 



Circ. 30, p. 5. 1901. 



D. grandiflora Phil. Anal. Univ. Chile 1873, p. 568, 1873, not of Hochst. 



1851. 

 Merathrepta americana Piper, Contr, Nat. Herb., vol. 11, p. 123. 1906, 



Type locality. — Chile. 



Range. — British Columbia to the mountains of southern California, 

 east to Wyoming. Chile. 



Zone. — Transition and Canadian. 



Specimens exwmined. — Silver Lake, Tahoe, Hansen, June 30, 1899 ; 

 Angora moraine south of Fallen Leaf Lake, Tahoe, 7,100 feet. Smiley 

 9; Kaweah meadows, Tulare County, 9,300 feet, Purpus 5247. 



2. Danthonia intermedia Vasey, Bull. Torr. Bot. Club, vol. 10, 



p. 52. 1883. 



X>. serioea Thurb., Bot. Calif., vol. 2, p. 294. ISSJO, not of Nutt. 

 Merathrepta americana Piper, Contr. Nat. Herb., vol. 11, p. 122. 1906. 



Type locality. — Not given. 



Range. — British Columbia to California and New Mexico. Gaspe 

 Peninsula, Quebec, and Newfoundland. 

 Zone. — Canadian and above. 

 Specimen examined. — Yosemite trail, 8,000 feet, Bolander 6104. 



12. DESCHAMPSIA 



1. Deschampsia caespitosa Beauv. Agrost., p. 91, t. 18. 1812. 



Aira caespitosa L., Sp. PI., p. 6-4. 1753. 



Type locality. — "Habitat in Europae pratis cultis & fertilibus." 

 Range. — Holarctic realm ; south in North America to California, 

 New Mexico, Minnesota, and New Jersey. 



