January 20, 1916 351 



LIST OF PLANTS IN THE VICINITY OF 

 PORTLAND, OREGON 



By M. W. Gorman 



111 coinpi!in<T the following preliminary list of the plants of 

 Portland, my object is twofold, viz.: first, as a basis of compar- 

 ison wilh ihe vegetalion as known here thiity years ago, and 

 second, as a record for the use of future students and botanists 

 who may wish to know what our local flora consisted of at the 

 presei t time. That considerable changes and additions have 

 taken place within the past twenty-five or thirty years is clearly 

 evidenceil by the fdct that of the present list of 835 plants, 95 

 S{>ecies, exclusive of the cnptogams, were not included in How- 

 ell's Flora, issued March 15, 1S97, to August 10, 1903, and that 

 of the i)lants which were included therein, a few additional spe- 

 cies were not iheu known to occur in the viciniiy of Portland. 



The plants herein included are such as can be found within 

 the j>resent city limits or in close proximity ihe'.eto and readi.y 

 accessible by one or other of the various suburban car lines. It 

 is quite probable that say 50 additional species, chiefly amongst 

 the grasses and sedges (wilh which 1 am not familiar), could l)e 

 found within the area included. The locality of a few plants is 

 given as Multnomah Falls, not because they cannot be found 

 nearer this city, but for the reason that the sj ecimen in hand 

 was collected there. Many indigenous species which formerly 

 occurred on Mt. Tabor (now Mt. Tabor Paik) cannot at present 

 be found nearer than Mt. Scott, and some species such as Clin- 

 toiiia niiijiora, Cytherea biilbosa, Cimicifnga elata and Cyno- 

 glossiiDi grande, which twenty years a;o we;e not uuconunon iu 

 Macleav Paik, have now to be collected much further afield. 



A few species have disappeared within the last tliirty >ea>s, 

 while many introduced species and ballast waifs have put in an 

 appearance during the same period. Most of the two latter 

 classes soon become established owing to our mild balmy climate 

 and ample rainfall, the majority as common weeds, a few as more 

 or less ornamental plants, a smnll minority as veritable, farm 

 pests, while a still smaller number disappear after a \ear or two-, 

 probably owing to failure iu finding a congenial habitat. 



