222 University of California Publications in Botany [VOL. 9 



Range. Mountains of California and southern Oregon east to the 

 Kockies of Colorado and Wyoming. 



Zone. Transition to Hudsonian. 



Specimens examined. About Marlette Lake, east of Lake Tahoe, 

 2,460 m., Baker 1395; base of Cloud's Best, Yosemite, Congdon, 

 August 5, 1898; Pine Ridge, Fresno County, 5,300 feet, Hall and 

 Chandler 156 ; meadows along Volcano Creek, Tulare County, 8,000 

 feet, Hall and Babcock 3315 ; Guyot Creek, Tulare County, 10,500 feet, 

 H. M. and G. R. Hall 8431 ; Chagoopa Creek meadows, Tulare County, 

 10,000 feet, Dudley 2240, 2241. 



8. oregana Howell (Erythea, vol. 3, p. 34. 1895) is unknown to 

 me from collections ; by character it would appear impossible of sep- 

 aration from this variety. 



Micranthes montwia Small (N. Am. Fl., vol. 22, p. 138. 1905), 

 described from a collection made by Mrs. F. M. Meigs on "Pyramid 

 Peak, California," west of Lake Tahoe, is said to differ from var. 

 sierrae by petals more acute and follicles shorter. 



JAMESIA 



1. Jamesia americana T. and G., FL, vol. 1, p. 593. 1840. 



Edwinia americana Heller, Bull. Torr. Rot. Club, vol. 24, p. 477. 1897. 

 Edwinia californica Small, N. Am. Fl., vol. 22, p. 176. 1905. 



Type locality. "Along the Platte or the Canadian River, near 

 the Rocky Mountains." 



Range. Wyoming to New Mexico and west through the southern 

 part of the Great Basin to the southern Sierra Nevada. 



Zone. Arid Transition to above timber line in the alpine region. 



Specimens examined. White Chief Mine, Mineral King^region, 

 2,900 m., Hall 5649 ; Mineral King, Brandegee, July 29, 1892 ; Whit- 

 ney Creek, Tulare County, 8,500 feet, Culbertson (B 4345) ; trail to 

 Mt. Whitney, 10,000 feet, Culbertson (B4576); Old Mt. Whitney, 

 9-12,000 feet, Purpus 1481. 



I have not had an opportunity to examine the type of E. cali- 

 fornica, which was collected by Miss Eastwood at Volcano Creek Falls, 

 Tulare County, on the border of the Transition and Canadian zones; 

 the other collections from the southern Sierra present no characters 

 unlike those of the southern Rockies. 



