September 30, 1910 11 



NOTKS ON THE FLORA OF NEVADA— II 

 By A. A. Heller 



Carex 



Several numbers of this interesting but difficult genus were 

 collected during 1909 and sent to Mr. Kenneth K. Mackenzie 

 for determination. 



Carex capitata L. Sp. PI. ed. 2, 1379. 1763. 



No. 9922, collected July 31, on Mt. Rose, at an elevation of 

 9650 feet in swampy ground on a northerly slope. Mr. Mack- 

 enzie reports that this is "rarely found in the western moun- 

 tains." The originals were found "in Lapponia, Anglia." 



Carkx phaeocephala Piper, Cont. U. S. Nat. Herb. 11: 



172. 1906. 

 No. 9974. An alpine species, collected above timber line 

 on Mt. Rose, September 23d, on stony slopes, at an elevation of 

 10300 feet, where it is rather plentiful. The type was collected 

 in Oregon by Elihu Hall. 



Carex quadrifida Bailey, Proc. Cal. Acad. II. 3: 104. 1891. 

 No. 9975, collected at the same place and time as the above, 

 the two growing together. This is evidently a rare species, as 

 it was determined from the description, there being no speci- 

 mens in New York for comparison. The type is Bolander's 

 5046, collected on Mt. Dana, California. 



Carex scopulorum Holm, Amer. Journ. Sci. IV. 14: 422. 



1902. 

 No. 9921; collected July 31, on Mt. Rose, elevation 9650 

 feet, growing with C. capitata in swampy ground. The origi- 

 nal came from "the region of Clear Creek Canyon," Colorado. 



Carex straminiformis Bailey, Mem. Torr. Club 1: 24. 1889. 

 No. 9903, collected July 29, on Mt. Rose, at an elevation of 

 9650 feet, growing in sand in a little flat, at that time rather 

 drv, but which had held snow until early summer. 



