NEW PLANTS OF THE PACIFIC SLOPE, WITH SOME 



REVISIONS 



By CHARLES V." PIPER 



The following botanical notes, accumulated by the writer while 

 studying" the plants of the State of Washington, relate particularly to 

 the neighboring States. Several new species are described, and there 

 is also included a critical study of the subspecies of Cassiope merten- 

 siana and a revision of the species of Orthocarpus related to O. im- 

 bricatus. The types of all the new species are deposited in the 

 United States National Museum. 



CASSIOPE MERTENSIANA AND ITS SUBSPECIES 



CASSIOPE MERTENSIANA (Bong.) G. Don. 



Cassiopt mertensiana (Bono.) G. Don, Hist. Dichl. PL, 3:829. 1834. 

 Andromeda mertensiana Bong., Mem. Acad. St. Petersburg, vi, 2 : 152. 



1832. 

 Andromeda cupressina Hook., Fl. Bor. Am., 2:38. 1834. 



Type from "Rocky Mountains north of the Smoking River, lati- 

 tude 46°. — Drummond." This locality is, however, really about 

 latitude 56. ° The type specimen of Andromeda mertensiana is from 

 near Sitka, Alaska. 



This beautiful plant, in its typical form, ranges from Alaska south 

 in the Rocky Mountains to about the 49th parallel, and in the Cas- 

 cade Mountains to the Three Sisters, Oregon. The species is char- 

 acterized by having, among other traits, minutely puberulent stems 

 and peduncles, leaves not at all ciliate, and entire calyx lobes. South- 

 ward from the above-mentioned points, none of the plants heretofore 

 referred to C. mertensiana are in agreement with these characters, 

 and this material represents, we believe, three well-marked sub- 

 species. 



CASSIOPE MERTENSIANA GRACILIS Piper, subsp. nov. 



Stems and peduncles glabrous ; leaves 2 to 3 mm. long, smaller 

 and more densely crowded and less distinctly 4-ranked than in 

 typical C. mertensiana ; flowers 4 to 5 mm. long, smaller than in 

 C mertensiana and on much longer peduncles, 10 to 20 cm. long. 



The following specimens have been examined : 



i95 



