642 RvDBERG : Rocky Mountain flora 



Dunal in De Candolle's Prodromus ; but our plant does not agree 

 with the description of any of these, except perhaps that of 

 S- ptcrocauloii ; a specimen of the latter cited by Dunal is in the 

 herbarium of Columbia University, and this shows that it is more 

 closely related to S. nodijionivi than to S. nigrinii. 



S. iiitcriiis grows in river valleys and on sandy soil among 

 bushes at an altitude of 600-1800 m. 



Nebraska: On Middle Loup River, near Mullen, 1893, Ryd- 

 berg 1383 (type). 



Kansas: Reno County, 1897, Hitchcock 362-a. 



Colorado: Near Boulder, 1902, Tzvccdy 3236; Timnath, 

 1899, Ostcrliout ; along Platte River, Denver, 1878, ]\L E. Jones 

 ■603; Canon City, 1896, Shear 3j'j'j ; Bent's P^ort, 1S46, Lt. 

 Abert. 



Arizona: Chiricehun Mountains, 1894, Tonmey. 



New Mexico : Mesilla, Dona Ana County, 1898, Wootoii 30. 



Pentstemon strictiformis sp. nov. 



Perennial with a woody caudex ; stems 3-5 dm. high, glabrous 

 and strict, simple; basal leaves petioled, 5-10 cm. long; blades 

 oblanceolate, obtuse, glabrous and slightly glaucous ; stem- 

 leaves sessile, lanceolate, acuminate, 4-8 cm. long ; inflorescence 

 more or less secund ; calyx-lobes lanceolate, acuminate, 8-1 

 mm. long, more or less scarious and dentate on the margin ; 

 corolla violet-purple, funnelform, somewhat gibbous, about 2.5 

 cm. long and limb nearly 2 cm. wide ; anthers long-villous with 

 white hairs ; sterile stamen villous with yellow hairs. 



This is closely related to /'. strietiis, but differs mainly in the 

 long-acuminate sepals. It grows up to an altitude of 2800 m. 



Colorado: Mancos, 1898, Baker, Earle & Tracy j6 (type); 

 Gray-Back Mining Camp, 1900, Rydbcrg & Vreelaiid 3630; 

 Arboles, 1899, Baker 602. 



Pentstemon oreophilus sp. nov. 



Perennial branched at the base, perfectly glabrous throughout, 

 2-4 dm. high ; basal leaves oblanceolate, obtuse, short-petioled ; 

 stem-leaves lanceolate and sessile, 5-10 cm. long, acute or acu- 

 minate ; inflorescence dense and usually more or less one-sided, 

 calyx 8-10 mm. long; lobes lanceolate, long-acuminate with 

 toothed scarious auriculate sides ; corolla funnelform, more or less 

 gibbous, bluish purple, 12-15 mm. wide at the mouth ; lower lip 



