MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 347 



about 5 mm. long, glandular-pubescent, its lobes short, triangular ; 

 corolla fully 1.5 cm. long, dark purplish blue, cylindric-funnel- 

 form, slightly oblique, a little gibbous, puberulent ; lower lip a little 

 longer than the upper one, with a few long hairs inside ; sterile 

 stamen with a spatulate end, densely covered with a yellow beard. 



Intermediate between P. procertis and P. /nmiilts, having the 

 general habit and leaves of the former, but the corolla of the latter. 

 Its flowers are half again longer than those of P. -procerus^ and they 

 are much more open and less bearded within. The stem-leaves are 

 never toothed as in P. humilis^ and all the leaves are much thicker. 



Not uncommon in the mountains, at an altitude of 6000-8000 feet. 



Montana : Bridger Mountains, June 12, 1897, Rydberg & Bessey, 

 4gig (type) ; July 11, 4^18 ; 1896, Flodman, 76-/ ; Little Belt Mts., 

 768 ; Beaver Head Co., 1888, Tivccdy, 74. 



Yellowstone Park : Mammoth Hot Spi'ings, 1885, Tweedy, 861. 



Idaho: M. Chauvet, July 29, 1897, Rydherg d: Bessey, 4^17. 



* Pentstemon pseudohumilis. 



Perennial, from a branched creeping rootstock, quite glabrous 

 up to the inflorescence ; stem 2-3 dm. high, simple ; basal leaves 

 broadly spatulate or elliptic, thin but firm, obtuse or acutish, con- 

 tracted into a slightly winged petiole, with perfectly entire margins ; 

 stem-leaves oblanceolate, oblong or lanceolate, mostly all opposite ; 

 inflorescence paniculate with short branches, sometimes almost ver- 

 ticillate, more or less glandular-pubescent ; calyx glandular-pubes- 

 cent, 4-6 mm. long, deeply cleft into lanceolate slightly scarious- 

 margined acute or acuminate lobes; corolla bluish purple, slightly 

 pubescent, about 1.5 cm. long, funnelform, slightly oblique, some- 

 what gibbous ; sterile stamen with the spatulate end densely covered 

 with a yellow beard. 



Nearest related to P. humilis and the preceding. From the 

 former it differs in the leaves which are never toothed, and turn 

 brownish in drying, and in the shorter branches of the inflorescence. 

 It differs from P. pseudoprocertcs in the thinner and generally 

 broader basal leaves, the longer sepals and the inflorescence which 

 is less like an interrupted spike. Grows on wooded mountain-sides, 

 at an altitude of 2500-3000 m. 



Montana: Jack Creek, July 15, 1897, Rydherg & Bessey, 4^16; 

 Monarch, 1890, R. S. Williams, 181. 



Idaho: Mt. Chauvet, July 29, 1897, Rydberg & Bessey, 4^1^ 



(type). 



