PIPER FLORA OF THE STATE OF WASHINGTON. 17 



tributaries of the Yakima, thence over the Wenache Mountains to 

 the Cokimbia, which was reached just below the mouth of the Wena- 

 che. From here the party followed the Columbia and Okanogan to 

 Lake Osoyoos. Following: up the Similkameen and Ashnola the 

 party formed a camp at 1,G70 meters (5,480 feet) elevation on the 

 boundary, where they remained some time. 



The other party proceeded to Fort Walla Walla and thence north- 

 ward, crossing the Snake at the mouth of the Palouse and passing 

 Eock Lake on the route to Fort Colville. Tlje collections of this 

 party were made by John Buttle, but the specimens seem all to be 

 credited to Lyall. During the year 1860 the survey. was completed 

 nearly to the Idaho line. 



Lyall's account of his botanical observations is brief, but very inter- 

 esting. A nearly complete set of his plants is in the Gray Herbarium. 



JEFFREY. 



John Jeffrey, a Scotch botanist, was sent out by some patrons to 

 collect the seeds of plants of horticultural interest in the region 

 traversed by Douglas, " to complete his researches, and to extend them 

 into those parts of the country not fully explored by him." Jeffrey 

 was at Fort Colville May 13, 1851, reaching that point from the 

 northward. During this season he spent much of the time in north- 

 ern Washington and adjacent British Columbia. Lale in the season 

 he was on Mount Baker. In May of the following year Jeffrey was 

 at Fort Nisqually, and during June and July at Fort Vancouver. 

 His remaining explorations were all southward- 

 Very little is known of Jeffrey's specimens, as none exist in Ariieri- 

 can herbaria, and but little has been published concerning them. 



COOPER. 



Dr. J. G. Cooper collected in various portions of Washington 

 from 1853 till 1855, in connection with the Stevens Survey of the 

 forty-eighth parallel. An annotated list of his plants, including 

 also some collected by Dr. George Gibbs and Dr. G. Suckley, is pub- 

 lished in the Pacific Kailroad Reports, volume 12, part 2. 



COLLECTORS SINCE 1860. 



Among botanical collectors since 1860 none has done more to 

 explore the flora of the State than Mr. W. N. Suksdorf, of Bingen, 

 who for twenty-five years past has been an assiduous student of plants. 

 His most important collections have been made in Klickitat County, 

 but he has gathered much material also in Spokane and Whatcom 

 counties, and elsewhere. Sets of his plants are in all the principal 

 29418—06 M 2 



