644 Rydberg : Rocky Mountain flora 



at the apex, entire or with a short tooth on each side, tinged with 

 pale brown ; calyx about 2 cm. long, densely and finely pubescent, 

 cleft about equally deep in front and on the back ; each division 

 with 2 lanceolate lobes, about 3 mm. long ; corolla about 3 cm. 

 long ; upper lip about i cm. long ; lower about 3 mm. 



This species may be most closely related to C. cotifusa Greene, 

 but is easily distinguished by the light brownish color of the obtuse 

 bracts. On account of this light color the type-specimens were 

 labeled C. pallida, which it resembles somewhat but has an alto- 

 gether different corolla. It grows in the mountains at an altitude 

 of 2700-3300 m. 



Colorado: Cameron Pass, 1896, Baker (type) ; Gray's Peak, 

 i^ji, Porter ; Red Mountain, south of Ouray, 1901, Underzvood 

 & Sell)]' 2^ J ; Pike's Peak, 1894, E. A. Besscj. 



Castilleja obtusiloba sp. nov. 



Perennial with a very short caudex ; stem very sparingly hairy, 

 3—4 dm. high ; lower leaves oblong-lanceolate, 3-nerved, minutely 

 pubescent, 3—4 cm. long, entire ; the upper broader, 3-cleft ; lateral 

 lobes lanceolate ; the middle one oblong, obtuse ; bracts similar, 

 but broader, purple ; middle lobe elliptic, rounded at the apex ; 

 calyx about 2.5 cm. long, almost equaling the corolla, equally 

 deeply cleft in front and on the back ; lobes short, oblong and 

 rounded at the apex ; corolla yellowish and purple-tinged ; upper 

 lip nearly i cm. long ; lower nearly 3 mm. 



This species is perhaps a near relative of C. rliexifolia and C. 

 confusa, but easily distinguished by the peculiar bracts and short 

 and very obtuse calyx-lobes. It grows at an altitude of about 

 2700 m. 



Colorado : Leroux Park, Delta County, 1892, Coiveii. 



Castilleja pubeiula sp. nov. 



Perennial with a short cespitose caudex ; stems less than i dm. 

 high, finely puberulent ; leaves 2-3 cm. long, pinnately divided 

 into linear lobes or entire and linear, finely puberulent ; bracts 

 similar, but shorter and broader, tinged with yellowish, often 

 more villous; calyx more or less villous, i — 1.5 cm. long, deeper 

 cleft in front than on the back ; lobes lanceolate, acute ; corolla 

 yellowish, 18— 20 mm. long; upper lip 6-"^ mm. long; lower lip 

 3-4 mm., very gibbous. 



This species has been taken for C. bracliyantha R}'db. (^C. brcvi- 



