﻿548 Nelson : New Plants from Wyoming. — IV 



Finely but very densely pruinose-pubescent throughout, ob- 

 scurely glandular upwards : stems i— several, from a woody, simple 

 or branched caudex, ascending or more rarely erect, usually some- 

 what decumbent at base, 1-2 dm. high : radical leaves entire or 

 rarely denticulate, numerous, clustered on the crowns, ovate to 

 oblong, from obtuse to subacute, blade 2-4 cm. long, tapering 

 into stout, narrowly margined, somewhat shorter petioles ; cauline 

 leaves entire, narrowly oblong, sessile or the lower tapering into 

 margined petioles, 2-5 cm. long : thyrsus leafy-bracteate, dense, 

 from short to much elongated : bracts narrowly oblong to linear, 

 often longer than the flowers : sepals lanceolate, minutely glandu- 

 lar-pubescent, about as long as the short (8 mm.) and broad 

 corolla-tube, which is gradually inflated into the ventricose-cam- 

 panulate throat : corolla about 2 cm. long, tube shorter than the 

 throat, the rounded lobes subequal, about 5 mm. long, copiously 

 but finely villous on the lower lip : sterile filament bearing a dense 

 tuft of yellow hair at apex (which is slightly exserted) and some- 

 what similar pubescence for most of its length but sparsely to- 

 wards its tip ; anther cells confluent but not explanate : capsule 

 short, ovoid, acute, at maturity longer than the sepals. 



Pentstemon similis. 



P. Jamesii Benth ; A. Gray, in Proc. Am. Acad. 6 : 67, in large 

 part at least. 



The more southern plant referred to above as having given rise 

 to some confusion may receive this name, and the appended de- 

 scription will make its recognition not difficult It is, in the main, 

 the plant indicated by Dr. Gray, as cited above, and in the 

 Synoptical Flora. The slenderer habit of P. similis, its narrower 

 leaves, longer and more ventricose corolla, with its tube longer 

 than the sepals, as well as the difference in the pubescence of the 

 plant in general and the sterile filament in particular make it im- 

 possible longer to confuse the two. As representing this species 

 attention may be called to Fendler's numbers before noted, and the 

 recent collections in New Mexico by Wooton and by Heller, dis- 

 tributed as P. Jamesii. 



Caudex woody, branched; herbaceous stems few to many, 

 slender, leafy, ascending or erect, 2-3 dm. high (including the in- 

 florescence), from glabrate to finely and somewhat sparsely pruinose- 

 pubescent : radical leaves mostly short-petioled, narrowly oblanceo- 

 late, 3-7 cm. long (including the petiole), mostly entire ; stem 



