636 Rydberg : Rocky Mountain flora 



higher peaks of Colorado among rocks, at an altitude of 2700— 

 4000 m. 



Colorado: Gray's Peak, 1895, Rydberg (type); also 1886, 

 Lettcnnan J2J ; Gvdiym.o\.\x\t, Lcttcnuaii j 22 ; Central City, 1869, 

 Leiiille. 



Phacelia sericea ciliosa var. nov. 



Usually taller than the typical P. scricca, often 5 dm. high, not 

 silvery, green ; pubescence very sparse and short, except some 

 long silky hairs on the pedicels and lower portion of the stem. 



This variety has been mistaken for P. Lyallii and P. idalioensis. 

 It has been confused with the first on account of the similar pubes- 

 cence, but P. Lyallii is a much smaller plant and with less deeply 

 dissected leaves. It resembles P. idahocnsis very closely in gen- 

 eral habit, but in that species the stamens are only slightly ex- 

 serted and the corolla smaller. The variety has the same range 

 as the species, but grows usually at a lower altitude. As the type 

 may be taken : 



Colorado: North of Merker, 1902, Ostcrlioiit 26ig. 



Lappula Besseyi sp. nov. 



Biennial ; stem 5-10 dm. high, hirsute, branched above ; lower 

 leaves petioled, 6—15 cm. long; blades spatulate or oblanceolate, 

 obtuse, hispidulous and hirsute on the veins ; upper leaves sessile, 

 lanceolate ; inflorescence branched ; bracts small ; pedicels in 

 fruit 4-5 mm. long, more or less reflexed ; corolla dark blue, 

 scarcely over 1.5 mm. wide ; fruit about 3 mm. wide; marginal 

 spines distinct and in one row ; back flat, spineless, but minutely 

 hispidulous. 



In general habit this species resembles most L. fiorilunula, but 

 is distinguished by the very small flowers and fruit. It grows in 

 caiions at an altitude of about 2400 m. 



Colorado : Cheyenne Canon, 1895, E. A. Bcssry (type) ; also 

 in 1896. 



Lappula angustata sp. nov. 



Biennial or short-lived perennial ; stem strict, hirsute, 6-S dm. 

 high ; lower leaves petioled, 9-15 cm. long, strigose or hirsute on 

 the petioles ; blades narrow, linear-oblanceolate, mostly acute ; 

 stem-leaves linear-lanceolate, sessile ; inflorescence with strongly 

 ascending branches ; pedicels reflexed in fruit, about 5 mm. long ; 

 corolla blue, about 4 mm. wide; fruit 4-5 mm. wide; marginal 



