302 NORTH AMERICAN FAUNA. [No. 7. 



Prunus virginiana (or demissa). 



The chokecherry grows sparingly about Sheep Spring in the Juni- 

 per Mountains between Panaca, Nevada, and Hebron, Utah, but was not 

 observed elsewhere. 



Prunus andersoni. 



. This species was found on the west slope of Walker Pass in the 

 southern Sierra Nevada, California, at an altitude of about 1,370 me- 

 ters (4,500 feet). 



Basilima millefolium. 



This beautiful shrub was observed on the Beaverdam Mountains in 

 southwestern Utah, and on the east slope of the High Sierra in Cali- 

 fornia, where it was abundant at and a little below 2,900 meters (9,500 

 feet). 



Holodiscus discolor. 



Pound on the east slope of the Sierra Nevada in California at an al- 

 titude of about 2,130 meters (7,000 feet). 



Adenostoma fasciculatum. 



The California chemisal or chemise does not enter the desert region 

 of the Great Basin, though it occurs on the north or Mohave Desert 

 slope of the Sierra Liebre and throughout Cajon Pass in the San Ber- 

 nardino Mountains. It is the prevailing chaparral of the coast ranges 

 of southern California' and is generally mixed with scrub oaks and 

 CeanotlmSj forming impenetrable thickets. It is abundant on the 

 west slope of the Sierra Nevada on the east side of the upper San Joa- 

 quin Valley. On the north slope of the Sierra Liebre it begins a little 

 north of Alamo ranch at an altitude of 730 meters (2,400 feet), whence 

 southward it is the prevailing chaparral. It was in flower in the Sierra 

 Liebre the last week in June. 



Kunzia glaudulosa [ = Purshia glandttlosa]. 



Mr. Coville tells me that this is the species found by us on the sum- 

 mit of Walker Pass in the southern Sierra Nevada, and thence down on 

 the west slope to 940 meters (4,100 feet). 



On the east slope of the Beaverdam Mountains (which cross the 

 boundary between Utah and. Arizona) Mr. Bailey and I collected a 

 form very close to K. glandulosa, and also the typical K. tridentata, 

 apparently at different altitudes. Some of the records under the latter 

 species may belong to the former. 



Kunzia tridentata [ = Purshia tridentata']. 



Kunzia tridentata is common on many of the desert ranges, where 

 it usually grows in company with Cowania mexicana and Fallugia par- 

 adoxa. When not in flower these three genera resemble one another 

 so closely that they are sometimes confounded. Kunzia has yellow 

 flowers on very short peduncles; Fallugia has pure white flowers on very 

 long peduncles j Cowania has handsome cream-colored flowers on mod- 



