110 CONTKIBUTIONS FROM THE NATIONAL HERBARIUM. 



MUHLENBERGIA. 



Lemmas acuminate L J/- rncemosa. 



Lemmas long-awned. 



Hairs of the callus equaling the lemma 2. M. comata. 



Hairs of the callus much shorter than the lenmia 3. M. syhaiica . 



1. Muhlenbergia racemosa (Michx.) B. S. P. Prel. Cat. X. Y. 67. 1888. 

 Agrosfis racemosa Michx. Fl. 1: 53. 1803. 



Muhlenhenjia glomerata'Tr'm. Gram. Unifl. 191. 1824. 



Polypogon glomevatus Willd. Enum. Hort. Berol. 87. 1809. 



Type locality: "Hab. in ripis sabulosis inundatis fluminis Mississippi." 



Eange: Newfoundland to British Columbia, south to New Jersey, Missouri, and New 

 Mexico. 



Specimens examined: Sumas Prairie, LyaJl in 1858-9; Loomis, Elmer, August, 1897; 

 Wenache Valley, Sandherg <& Leiberg 594; Parker, .4. D. Dunn; Cascade Mountains, raAcy 

 140. 



Zonal distribution: Transition. 



2. Muhlenbergia comata (Thurb.) Benth.; Vasey, Desc. Cat. Grasses U. S. 39. 1885. 

 Vaseya comata Thurb. Proc. Acad. Phila. 1863: 79. 1863. 



Type locality: "A native of the plains of Nebraska." 

 Range: Colorado to Washington and California. 

 Specimens examined: Loomis, Elmer 558. 

 Zonal di.stribution: Arid Transition. 



3. Muhlenbergia sylvatica setiglumis S. Wats. Bot. King Explor. 378. 1871. 

 Type locality: "Near Warm Springs in Humboldt Pass, Nevada; 6,000 feet altitude." 

 Range: Washington to Nevada. 



Speclmens examined: Spokane, Pi/«/-, September 1, 1899; Phileo Lake, Spokane County, 

 Siihsdorf 948. 



Zonal distribution: Arid Transiti((n. 



ALOPECURUS. 



Awns scarcely exceeding the glumes; spikelets 2 to 2.5 mm. long . . 1. .4. gemculatusfnlvits. 

 Awns much exceeding the glumes. 



Spikelets 3 mm. long; anthers orange 2. .4. califoriiicus. 



Spikelets 4 mm. long; anthers white 3. A. saccatus. 



1. Alopecurus geniculatus fulvus (Smith) Sonder, Fl. Hamb. 32. 1851. 

 Alopecunisfulrus J. E. Smith, Engl. Bot. 21: pi. 1467. 1805. 

 Alopecurus aristulatus Michx. Fl. 1: 43. 1803. 



Alopecurus geniculatus aristulatus Torr. Fl. U. S. 1: 97. 1824. 



Alopecurus geniculatus robustus Vasey, Bull. Torr. Club 15: 13. 1888. 



Type locality : England. 



Range: British Columbia to Newfoundland, st)uthward to Florida, Tennessee, and Cali- 

 fornia. Europe. 



Specimens examined: Coupe v ille, (rarcZner 333; Seattle, Piper 793; Smith, June, 1890; 

 Tacoma, Flett 14, 183; Leckenby,^\&y 29, 1897; Clallam County, EZmer 1663; Alma, Elmer 

 548; Ellensburg, Vasey 118; North Yakima, Henderson, May 26, 1892; Watt, August, 1895; 

 Klickitat County, Sul'sdorf 1066; Boundary, T. F. O'Hara; Usk, Kreager 356; Spokane, 

 Deivart, June 5, 1901; Asotin Creek, Hunter 93; Waitsburg, Horner 214. 



Zonal distribution: Transition. 



2. Alopecurus californicus Vasey, Bull. Torr. Club 15: 13. 1888. 



Alopecurus pallcsans Piper, Fl. Palouse Reg. 18. 1901. 



Type locality: Santa Cruz, California, according to label on the type specimen. 



