Volume 5 May 12, 1909 



MUHLENBERGIA 



Mr. HELLER'S 1908 CAREX COLLECTION 

 By Kenneth K. Mackenzie 



In the year 1908 Mr. Heller collected a number of species 

 of Carcx in Elko county, Nevada, which he sent me for deter- 

 mination. Most of the specimens represent well-known and 

 widely distributed species, but as several are rare and two ap- 

 parently represent undescribed species, I here give a list of the 

 species found by him. 



Carkx athrostachva 01ney> Proc. Am. Acad. 7: 393. 



1868.- 

 No. 9020, collected July 17th, at Deeth, in meadows at an 

 elevation of 5340 feet. 



Carex aurea Nutt. Gen. N. Am. PI. 2: 205. 1818. 

 No. 9317, collected August 5th, on Lamoille creek between 

 Lamoille and the mountains, elevation 6250 feet. Rare here. 



Carex festivA Dewey, Am. Journ. Sci. 29: 246. 1836. 



No. 9372, collected August 8th, on the ridge on the north 

 side of Lamoille cnnyon at an elevation of 8950 feet. Thi< is 

 probably the most common and characteristic species of Carex 

 found in the higher parts of the western portion of the United 

 States. 



I 1 ;; rex tissuricola sp. now 



Clumps apparently medium-sized and with short rootstocks, 



the culms phyllopodic, 5-8 dm. high, much exceeding the short 



leaves, roughened on the angles above: leaves with well devel- 



r— oped blades six to ten to a fertile culm, the upper two or three 



very widely separated from one another, the rest clustered at 



< S3) 



