Rydberg : Studies on the Rocky Mountain Flora 30 



cm. long, salverform : its lobes oval or obovate, obtuse : stamens 

 inserted unequally below the throat, included. 



This species is nearest related to G. aggrcgata ; but differs in 

 the white corolla and its rounded obtuse lobes.. It is also lower 

 and the upper leaves more reduced. It grows on dry hillsides at 

 an altitude of 2000-2700 m. 



Colorado : Mesas near La Veta, 1900, F. K. J^raiaiid, 602 

 (type); Veta Pass, 1900, Rydberg & Vrcclaiui, j/jo; Calham, 

 1893, Dt A. Sauiidcis. 



Phacelia alba sp. nov. 



A viscid-villous annual or biennial, 2-4 dm. high. Stem leafy, 

 strict and simple viscid-villous and glandular above : leaves twice 

 interruptedly pinnatifid, about i dm. long, glandular-puberulent, 

 hispid ciliolate on the margins and veins ; ultimate segments ovate 

 or oblong, 3—6 mm. long : inflorescence branched, dense, in flowers 

 almost capitate, but branches in fruit spiciform : flowers nearly 

 sessile, 2-ranked : calyx glandular, cleft to near the base ; sepals 

 broadly linear, obtuse, about 2 mm. long, about one third shorter 

 than the white corolla : the lobes of the latter rounded, crenate : 

 appendages 10, broadly ovate : stamens and style much exserted : 

 capsule ovoid, about 6 mm. long : seeds often solitary in each 

 cavity, finely pitted. 



This species is nearest related to P. Neo-Mexicaiia and P. Popci, 

 resembling the latter most in habit, but having the viscid-pubes- 

 cence and the crenate corolla-lobes of the former. It differs from 

 both in the small white corolla and the long- exserted stamens. It 

 grows in mountain valleys at an altitude of 1800—3000 m. 



Colorado: Sangre de Christo Creek, 1900, Rydberg & Vree- 

 land, j^j^ (type); Valley of Upper Arkansas River, 1873, /(V/// 

 Wolfe (Wheeler Expedition), 99 ; Headwaters of Clear Creek, 

 1 86 1, C. C. Parry, J I ^. 



New Mexico: Ruidoso Creek, White Mountains, 1895, E. O. 

 Wootou. 



Lappula calycosa sp. nov. 



A hirsute annual, simple below, branched above with long 

 virgate branches. Stem hirsute, 3—4 dm. high : leaves oblong, 

 obtuse, 3-4 cm. long, "/—^ mm. wide ; those of the branches 

 smaller : pedicels short, in fruit 2-3 mm. long, generally 4 mm. 

 below the leaves ; corolla pale blue, about 1.5 mm. long and i 

 mm. broad : calyx-lobes enlarged in fi it, foliaceous, 4—6 mm. 



