70 PROCEEDINGS OF THE AMERICAN ACADEMY 



(a very depauperate doubtless alpine specimen in herb. Acad. Philad.) ; 

 common about Pike's Peak and vicinity, Parry, no. 257 (Enum. p. 27), 

 Mr. Howard, and in taller specimens than before seen, Hall and Har- 

 bour, 1862, no. 387, on low mountains, " an early and very pretty spe- 

 cies," confirming its close relationship with P. gracilis. Yet this 

 cannot be regarded as a variety of P. puhescens. ^ 



44. P. GLAUCUS, Graham ; Lindl. Bot. Mag. t. 1286. Spithamseus 

 ad ultrapedalem, prajter inflorescentiam floresque viscosos glaber ; foliis 

 subglaucis, (radicalibus subovatis,) caulinis lanceolatis sen basi dilatata 

 ovato-lanceolatis ; thyrso subcompacto (sepalis ovato-lanceolatis) ; co- 

 rolla poUicari supra basim ventricoso ampliata lilacina seu violacea, 

 fauce ampla hiante, plicis sub labio inferiore (pilis longis parce villoso) 

 vix ullis. — Saskatchawan, or in the Rocky Mountains, Drummond. 



Var. /3. STENOSEPALUS : thyrso brevi compacto ; sepalis lanceolatis 

 longe attenuato-acuminatis. P. glaucus, Gray, Enum. PI. Parry, p. 

 27. Rocky Mountains, about Pike's Peak, Clear Creek, &c.. Dr. James 

 in herb. Torr., Dr. Parry, 261, 262, and coll. 1862, distributed by Hall 

 and Harbour, 399. — Corolla, as in the figure P. glauciis in the 

 Botanical Register, abruptly much ampliate, almost as much so as that 

 of P. Digitalis, but more gibbous, very distinctly bilabiate, the lower 

 lip a little exceeding the upper. 



45. P. Hallii (sp. nov.). Nanus, 3 - 5-pollicaris, multiceps, praster 

 jnflorescentiam calycesque (occulo armato) minutissime glandulosos gla- 

 ber ; foliis glauco-pallidis integerrimis lineari-spathulatis seu lineari- 

 bus basi attenuatis ; thyrso vel potius racemo simplici 4-10-floro, 

 pedicellis calyce brevioribus ; sepalis ovatis oblongisve margine late 

 scariosis sa;pius erosis ; corolla subpollicari e basi brevissima inflata 

 ventricoso-campanulata cteruleo-purpurea, labiis brevibus suba^quilongis, 

 superiori fere ad medium bilobo inferiori trilobo intus glabro, fila- 

 mento sterili hinc barbato. — Rocky Mountains near Clear Creek, &c., 

 in the alpine region, colh 1862, Parry, Hall and Harbour: no. 388 dis- 

 trib. Hall and Harbour. — A most beautiful species, from the size of the 

 flowers as compared with that of the stem, and their bright color. Co- 

 rolla nearly an inch long, more inflated than that of P. glaucus, the con- 

 tracted base being very sliort, decidedly bilabiate, but the lips only 

 3 or 4 lines long, very deeply colored ; the tube appears much paler. 

 Radical and lower cauline leaves one or two inches long, including the 

 narrowed base or petiole, 1^ to 2 lines wide towards the summit, thick- 

 ish ; the floral ones reduced to 6 or 3 lines long, and scarcely at all 



