320 LAMSON-SCRIBNER: NOTES ON MUHLENBERGIA 
pale green, light straw-colored or rose tinted; glumes 3-4 mm. long, 
subequal, narrowly lanceolate or linear, acuminate, sometimes 
pointed with a short awn, aculeolate-scabrous on the keel except- 
ing near the base, as long as or slightly exceeding the lemmas; lem- 
mas lanceolate, thin-membranaceous, copiously hairy near the base; 
hairs 1.5-2 mm. long; awns very slender, scabrous, 2-7 mm. long, 
paleas lanceolate-acuminate, acute or minutely 2-toothed, nearly 
as long as the lemmas and similarly hairy near the base. 
This species is represented in the National Herbarium by 
specimens from Colorado, Wyoming, Montana, Idaho, Utah, 
Nevada, Arizona, Washington, Oregon, and California. Speci- 
mens from the Rocky Mountain region generally have lead- 
colored panicles as in the type, those from Washington, Oregon, 
and California have pale green or very light straw-colored ones, 
while some of the Californian specimens ove violet or rose tinted 
panicles. These last may prove tob distinct species. 
Among the numbered specimens of this species in the National 
Herbarium are the following: 
CoLtorapo: C. F. Baker 945, 1901; Shear and Bessey 1339, 
1514, and 1533, 1898; H. N. Patterson 157, 1885; J. Wolf 1092, 
1873. 
WyomincG: Merrill & Wilcox 294, 365, 370, 388, and 423, 1901; 
Aven Nelson 3857, 1897; T. A. Williams 2889, 1897. 
Utan: C. A. Purpus 6375, 1898; M. E. Jones 5731a, 18094. 
ArIzona: M. E. Jones 6056, 1894. 
NeEvapa: S. Watson 1289, 1868. 
Montana: P. A. Rydberg 3411, 1896. 
WasHINGTON: A. D. E. Elmer 558, 1897. 
OREGON: Leiberg 617, 1894; W. C. Cusick 2447, 1900; 
Griffiths & Morris 514, 1901. 
CaLiFoRNIA: Bolander 1097; J. G. Lemmon 5475, 1899; 
Bolander 6094 and 6101, 1866. 
MUHLENBERGIA PAUCIFLORA Buckley, Proc. Acad. Nat. Sci. 
Phila. 1862: 91. 1863 
M. sylvatica Pringlei Scrib. Bull. Torrey Club 9: 89. 1882. 
M. neo-mexicana Vasey, Bot. Gaz. 11: 337. 1886. 
M. Pringlet Scribn. Trans. N, Y. Acad. Sci. 14. 1894, and Vasey 
in Contr. U. S. Nat. Herb. 3: 71. 1892. 
