Vol. 31, pp. 75-78 June 29, 1918 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



NEW PLANTS OF THE PACIFIC NORTHWEST. 

 BY CHARLES V. PIPER. 



The activities of field botanists in the Pacific Northwest con- 

 tinue to reveal interesting additions to the recorded flora. The 

 species here described are among the most noteworthy. Espe- 

 cially interesting are the new species of Vaccinium and Mertensia . 

 The types are in the possession of the writer. 



Epilobium cinerascens, n. sp. 



Perennial, erect, 60-120 cm. high, covered throughout with fine whitish 

 spreading rather dense puhescence, not at all glandular; leaves sessile, 

 lanceolate, acute, broadest at base, prominently denticulate, the larger 

 3-7 cm. long; flowers purple, 7-9 mm. long; pedicels and ovoid buds 

 erect; calyx-lobes lanceolate, acute, 4 mm. long; petals obcordate ; stigma 

 clavate; pods 3-4 cm. long and pedicels 1 cm. long; seeds three times as 

 long as broad, about 1 mm. long, .3 mm. broad, minutely tuberculate, 

 not at all hyaline; coma white. 



Specimens have been examined as follows: 



Washington: Spokane, Piper No. 2269; Lake Kalispel, Kreager July 

 30, 1902; Bingen, SuksdorfNos. 2748, 2749. 



Oregon: Milwaukee, Piper No. 5049; Sutherlin, Douglas County, Peck 

 No. 7817 (type). 



This species is intermediate between E. franciscanum Barbey and E. 

 holosericeum Trelease. It differs from E. franciscanum, to which it has 

 been referred, in its dense fine pubescence, sessile leaves and more slender 

 seeds. E. franciscanum seems to be purely a seacoast species and has 

 been collected as far north as Seal Rock near Newport, Oregon, Peck 

 No. 4398. 



Vaccinium coccineum, n. sp. 



Shrub 1-1.5 m. high, the branchlets slightly angled; leaves thin-mem- 

 branaceous, bright green on both sides, translucent, loosely reticulate- 

 veined, mostly obovate, acute or acutish, 2-3 cm. long, short-petioled, 

 closely serrulate, glabrous except for minute puberulence on the veins 



21— Proc. Biol. Soc. Wash.. Vol. 31, 1918. (75) 



