22 Rydberg: Studies on the Rocky Mountain Flora 



soon glabrate, i -ribbed or indistinctly 3-ribbed, generally distinctly 

 mucronate: flowering stems 1-1.5 dm. high, somewhat glanduh- 

 ferous above ; its leaves small and bractlike, oblanceolate or linear ; 

 heads 5-7 in a short raceme : fertile heads 7-8 mm. high and 

 6-7 mm. in diameter; its bracts imbricate in about 4 series, 

 slightly floccose, green at the base, purplish in the middle arid 

 with a light brownish scarious margin above ; the outer short and 

 ovate ; the inner lanceolate, acute : pappus very slender, filiform, 

 dirty white ; sterile heads about 5 mm. high and about as broad ; 

 its bracts broadly oblong, more 'floccose, brown and with a broader 



mar 



truncate ; pappus only slightly broadened above, white. 



It is nearest related to A. racemosa, but differs in the more co- 



more 



colored bracts of the fertile head and the broad scarious margins 

 of those of the sterile one. 



Oregon: Olympic Mountains, 1895, C. V. Piper (fertile plant 



in herbarium of Washington Experiment Station, Pullman) ; moun- 

 tains of northern Oregon, Wilkes Expedition (sterile plant in the 

 Torrey herbarium). 



Aster mollis sp. nov. 



A strict perennial with a horizontal rootstock. Stem densely 

 villous, almost tomentose, or in age more glabrate, 4-8 dm. high, 

 simple below, with short flowering branches above ; leaves obovate 

 to oblanceolate, 5-10 cm. long, densely and softly grayish pu- 

 bescent on both sides, sessile, slightly clasping, and occasionally a 

 little auricled at the base : heads terminating the short branches, 

 hemispherical ; disk about 1 5 mm. high and broad ; bracts 

 herbaceous, oblong, obtuse, villous-pubescent ; rays numerous, 

 bluish purple, about 1 cm. long and 2 mm. wide. 



This species reaches an elevation of 2200 m. 



Wyoming : Big-Horn Mountains, 1899, F- Tweedy, 2029 (type). 



Washington: Pullman, 1893, C. V. Piper, 1604.. 



^ Townsendia Vreelandii sp. nov. 



A 



dark green biennial, branching near the base. Stems and 

 branches simple, erect, 1.5-4 dm. high, mostly erect, sparingly 

 villous. Leaves numerous, all oblanceolate, short-petioled, 

 glabrous, mucronate, 4-8 cm. long, 5—8 mm. wide : involucre 

 about 15 mm. high and 25—30 mm. broad: bracts lanceolate, 

 acuminate, scarious, light green with dark green center : rays 



