even in having the staminode strongly bearded above, 

 though in the hitherto published accounts of P. rupicola 

 this is described as glabrous. To Mr. Howell we are 

 indebted for the definite separation of P. rupicola from 

 P. Newberryi, and although Mr. L. Krautter in his * Com- 

 parative Study of the Genus Pentstemon ' has reverted 

 to Piper's arrangement, it seems more desirable to adopt 

 that of Howell. Piper reports the occurrence on Mount 

 Adams of a plant with the depressed habit and thick 

 leaves of P. rupicola, but with the corolla of P. Newberryi. 

 The place of P. rupicola in the genus is within Bentham's 

 section Erianthera, on account of its dwarf habit, and 

 its densely comose anthers which open longitudinally 

 throughout their extent. At Kew P. rupicola has proved 

 hardy in a sunny position in the rock garden facing 

 south and grown under moraine conditions. It flowers 

 in May, and, although it has failed to ripen its seeds, 

 may be readily propagated by cuttings. 



Description.— Herb, dwarf, prostrate and branching 

 at tne base; stems ascending above, denselv puberulous 

 and more or less glandular upwards. Leaves ovate, 

 acute, base cuneate, usually about ± in. long and ± in. 

 wide, margin serrate, rather thick, with the midrib and 

 nerves more or less ciliolate, but otherwise barely dis- 

 tinguishable. Flowers clustered at the tips of the 



w£ Hn P ^ diC f S * iri ' lon S> glandular-pubescent; 

 bracts like the leaves but smaller; bracteoles acute, 



llZi l% ~ 2T Y 1 '- Wide " Se P aU oblong-elliptic, acute, 

 dkfU+r* 9°r g ' t m * wMe ' sli S ht1 ^ g la ndular. Corolla 

 clistinctly 2-hpped ventricose, rose-carmine ; tube 1 in. 



then l£: W1 a Q ° W ; narrowed to J in. above the base, 

 lower T^ T d T T Vards and I in - ™de at the throat 



&5L**?' T; t ln - wide ' 3 - lobed > lateral i°b es 



obfs M n i n C ^ d - l0be ' * in ' lon g' l W er liP Globed, 

 free den^ S r em * ; fila ™nts fin. long ; anthers 

 below ^fi Y ^T lly; stamin °de 1 in. long? glabrous 



' in ',orn d 1 ^° Ve - °""* ^indric-ovoidTi £. long, 

 r* m. across, glabrous; style over 1 in. long, glabrous. 



"«t , o, aninci , b, staminode -.—all enlarged. 



