MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 343 



* Pentstemon Lyallii Gray, Syn. Fl. 2' : 440 ; Pentstemon Menziesii 



Lyallii Grdiy, Proc. Am. Acad. 6: 26. 



Differs from the three preceding in the long corolla which is 3.5-4 

 cm. long, fewer flowers, and longer thinner sharpl}^ serrate leaves. 

 Rare, growing only in the western portion of the state. 



Montana: Missoula Canon, 1880, f'Fa/^c'w ; northwestern Mon- 

 tana, 1861, Lyall; Missoula, Mrs. J. J. Kennedy; Jocko River, 

 1883, Canby, 248. 



* Pentstemon ellipticus Coulter & Fisher, Bot. Gaz. 18: 302. 



Characterized by its low cespitose habit, 1-3-flowered flower- 

 cluster, and small oval serrate leaves, which are not coriaceous as 

 they are in the other species of the group. 



Montana: McDonald's Peak, 1883, Canhy, 24"/. 



* Pentstemon montanus Greene, Pittonia, 2 : 240. 



Perhaps somewhat related to the five preceding species, but the stems 

 are not woody, except the perennial caudex, and with rather fleshy, not 

 leathery, sharply serrate ovate leaves. Mountain sides, at an alti- 

 tude of 2000-3000 m. 



Montana: Mystic Lake, 1895, Rydberg, 2'j8i. 



Yellowstone Park: Mt. Holmes, 1884, F. Tzueedy, ^i ; Mt. 

 Norris, 1885, 866 (type) ; Electric Peak, Aug. 18, 1897, Rydberg 

 & Bessey, 4gog ; 1873, C. C. Rarrv, 204. 



Idaho: Mt. Chauvet, July 29, 1897, Rydberg & Besscy, 4^08. 



Pentstemon Fremontii Torr. & Gray, Proc. Am. Acad. 6 : 60 [Syn. 



Fl. 2\- 262; Bot. Cal. i: 622; Man. R. M. 274]. 



In the mountain regions, at an altitude of about 2000 m. 



Yellowstone Park: Mammoth Hot Springs, 1885, Tzueedy, 

 861. 



*Pentstemon Brandegei Porter. 



Pentstemon c\ananthus Brandegei Voriev Syn. Fl. Colo. 91. 



Stem tall, 3-5 dm. high, terete, glabrous or minutely puberulent, 

 strict, light-colored; basal leaves 5-8 cm. long, oblong, petioled, 

 entire, glaucous, glabrous, or puberulent under the lens ; lower stem- 

 leaves lanceolate, the upper ones ovate-cordate, sessile or somewhat 

 clasping, 3-7 cm. long and 2-3 cm. wide; bracts lanceolate, 1-2 cm. 

 long ; calyx 4-5 mm. long, its lobes short, broadly rhomboid or cune- 

 ate, broadly scarious-margined and cut-toothed, short-acuminate ; cor- 

 olla dark blue, about 3 cm. long, obliquely funnelform, only slightly 

 gibbous on the lower side ; lip slightly bearded inside ; sterile stamen 

 club-shaped, almost glabrous. 



