CATALOGUE. 377 



long ; lower palet acute, cuspidate or even short-awned, minutely pilose upon 

 the midvein and margin. — Yosemite Valley, California, (6091 Bolander,) and 

 near Donner Lake, (565 Torrey.) East Humboldt Mountains, Nevada, at 

 7,000 feet altitude, (1,280,) and the sliort-awned form (1,281) in the Uintas, 

 Bear River Canon, at 8,000 feet altitude ; August, September. The Califor- 

 nian specimens are mostly annual. 



Ageostis scabka, Willd. From Florida to Canada, the Saskatchewan 

 and Bear Lake, and west to Arkansas, Kansas and Dakota ; Unalaska ; Cali- 

 fornia. East and West Humboldt Mountains and in Ruby Valley, Nevada ; 

 5-7,000 feet altitude ; August, September. (1,282.) 



Ageostis exaeata, Trin. Steud. Gram. 165. Root biennial, fibrous ; 

 culms simple, erect, 1-2° high; ligules obtuse, 1-2" long; leaves flat, linear, 

 (1-3" wide, 2-4' .long,) the radical ones narrower ; somewhat scabrous; pan- 

 icle usually contracted and^ dense, 2-4' long, the rays 3-5 or more at each 

 axil, semi-verticillate, flowering from the base, erect ; glumes acute or sub- 

 acuminate, scabrous on the back, slightly unequal, 1-2" long; lower palet 

 usually nearly a half shorter, erose-truncate, very rarely awned above the mid- 

 dle, glabrous or a little hairy at base, the upper one a little smaller than the 

 ovary. — Sitka and Unalaska, and from Washington Territory to California ; 

 Colorado, (664 Vasey,) Arizona and New Mexico. East and West Humboldt 

 Mountains, Nevada, on stream-banks ; 5-6,000 feet altitude ; August, Septem- 

 ber. (1,283.) 



Va.r. {A. microphylla, Steud. Syn. Gram. 164. Torrey, Pac. R. R. 

 Surv, 4. 154.) Leaves and sheaths scabrous ; glumes nearly equal, tapering 

 to a long slender point, the lower one rough on the keel ; lower palet less 

 than half as long as the glumes, truncate with 4 short teeth at the summit, 

 awned a little below the middle with a bent scabrous bristle, equaling or more 

 frequently twice longer than the glumes, rarely wanting; upper palet small 

 or nearly obsolete ; callus somewhat bearded. — An examination of numerous 

 specimens in Herbs. Torrey. and Eaton, seemed to show this to be distinct 

 from the last species, though approaching it and both forms quite variable. 

 Dr. Bolander, however, is confident of their identity. Common in California. 

 On the Truckee River and in the West Humboldt Mountains, Nevada; 

 4-5,000 feet altitude ; July-November. (1,284.) 



Ageostis canina, L. Maine to New York and in the mountains south- 

 ward to North Carolina ; Greenland, (Kane ;) Sitka, (Bongard ;) Wash- 

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