179 



eluding the 40 which occur also in the Rockies and the 12 also 

 on Vancouver Island; 52 species, judging from the localities indi-' 

 cated, are purely local (doubtless in many cases an unwarranted 

 assumption); 11 are mentioned without definite locality or range; 

 III are introduced species, of which 48 are personally known to 

 the reviewer as occurring in Oregon, and therefore to be expected 

 in the intervening territory of Washington: 50 are included and 

 assigned to definite Washington stations in the two recent 

 manuals by Piper and Beattie, the Flora of Southeastern Wash- 

 ington and Adjacent Idaho (1914) and the Flora of the North- 

 west Coast (191 5). Several others of Henry's species appear 

 in the last-named work, but assigned only to Canadian stations. 



In addition to the above, there are 57 species which are given 

 a range by Henry that either explicitly refers them to Washing- 

 ton, or brings them so near the border that it would seem reason- 

 able to expect them on the other side, but which find no mention 

 in Piper's Flora or the two later works of w^hich he is joint author. 

 This comparatively small margin of discrepancy would be 

 doubtless further reduced by a wider knowledge of the specific 

 and varietal limits of these forms, and a more thorough explora- 

 tion of the territory. 



Turning now to the reverse side of the comparison, and ex- 

 aming the 928 forms included by Piper but not mentioned by 

 Henry, we find that they fall into several clearly-defined groups. 

 Beginning with those of the most restricted range and proceeding 

 outward, we may roughly group them as follow^s: 



1. Species that have been reported from the type-locality 

 only, 67. 



2. Species that belong to regions of marked endemism, with- 

 out being restricted to the original station: 



In the Olympics, 15 



On Mount Rainier, 8 



In the Wenatchee Mountains, 21 



In the Columbia Gorge and 



Klickitat County, 96. 



3. Species occurring only in Washington, without restric- 

 tion to one of the above regions, 107. 



