J6 New or Rare Plants from the Rocky Mountains. 



Root coarsely fibrous. Stem 6 inches high, very smooth, 

 terete. Leaves opposite, sessile acute, slightly glaucous ; 

 the lower ones narrow at the base. Peduncles many-flow- 

 ered. Calyx very smooth. Corolla an inch in length, 

 blue, tubular-campanulate. Anthers large, hairy. Sterile 

 filament longer than the inferior stamens, but shorter than 

 the superior ones, smooth, slender, dilated at the apex, with 

 a retuse point, which is bearded beneath. 



Hab. With the preceding. 



An intermediate species between P. erianthera and cierulea oi' 

 Nuttall. From the former it differs in the form of the 

 leaves and segments of the calyx ; and from the latter in the 

 hairy anthers, &,c. 



10. Caprakia jj us Ma.* 

 C. pubescens, foliis oppositis cordatis repando-dentatis pe- 



tiolatis, pedunculis axillaribus petiolo longioribus. 



Annual. Stem very slender, branched, about two inches high. 

 Leaves about one-third of an inch long, broad-cordate : 

 petioles shorter than the leaves. Peduncles filiform, 1 -flow- 

 ered. Calyx tubular-campanulate, with 5 acute, erect 

 teeth. Corolla campanulate, white, more than twice as long 

 as the calyx ; border with 5 obtuse lobes. Stamens didy- 

 namous, much shorter than the corolla; anthers roundish. 

 Germen oblong ; style filiform ; stigma 2-lobed. 



Hab. With the preceding, and on the sides of the Rocky 

 Mountains, in crevices of rocks. 



Allied to C. humilis of the East Indies. 



