No. 3. 



BY J. G. COOPER, M. D. 



PLANTS COLLECTED IN WASHINGTON TERRITORY. 



NOTE. In order to show the marked dissimilarity in the Floras of the opposite sides of the 

 Cascade range, I have made separate lists of the plants collected by me in the two regions. 



Though that from the east side (including a few from the summit of the range) presents a 

 comparatively small number of plants, still it seems to indicate something of the striking 

 distinctions referred to, those from the west having been collected during two seasons, and 

 being a comparatively complete list of the most characteristic plants. Most of the plants 

 common to both regions are inhabitants of the prairies, and it is but just to mention that many 

 of such as inhabit the western prairies have been found by other collectors in those east of 

 the range, though at an -earlier season than I visited them. I have made some notes on the 

 distribution of these in the chapter on the trees, &c. 



The whole of the first collection was examined and named by Professor Gray. Most of those 

 of the latter collections were also named by him or Professor Torrey, who, as well as Mr. G. 

 Thurber, have kindly assisted me in their determination. I have marked such species with the 

 initials G. and T., where the authority rests on Professors Gray and Torrey. 



I am also indebted to Mr. Gibbs for much assistance in collecting, and to Miss. E. Lincoln, of 

 Astoria, Oregon Territory, for a very well prepared collection of plants from the vicinity of 

 Cape Disappointment, Washington Territory, containing several species which I did not myself 

 obtain. 



The four hundred or more species enumerated does not include probably more than a third 

 of the plants of the Territory, and in the little known alpine regions of the several mountain 

 ranges much novelty doubtless remains for the botanist. 



I limited my notes on plants to such additions or corrections as I could make to the already 

 very complete descriptions contained in Torrey and Gray s Flora of North America; in Hooker s 

 Flora Boreali-Americana, and the other works cited in the lists. The localities, range within 

 the Territory, and notes of size, colors, &c., are, however, always given as far as known tome. 

 In some instances the only specimens of species collected were the seed and their envelopes. 



