220 BOTANY. 



clasping, entire or denticulate; panicle strict, with short appressed 3-4- 

 flowered peduncles ; sepals linear-lanceolate, attenuate, very hirsute; corolla 

 1' long, violet, broadly funnel-form above the calyx, somewhat bilabiate, the 

 lower lip and sterile filament strongly bearded with long hairs ; anthers 

 glabrous, expanding. — In a single locality on a limestone ridge near Roberts 

 Creek Station, Nevada; the specimens 1° high, with rather leafy close con- 

 spicuously bracted panicles. Western Nebraska and on the Upper Missouri 

 from Southern Dakota to the Rocky Mountains. (778.) 



Pentstemon Palmeri, Gray. Proc. Amer. Acad., 8. 291. Stout, 2-5° 

 high, glabrous, glaucous, the panicles glandular-puberulent ; leaves broadly 

 ovate- or oblong-lanceolate, sharply and unequally sinuate-dentate, the lower- 

 most spatulate and petioled, the upper amplexicaul ; panicle naked, elon- 

 gated, racemose, the rather short peduncles 2-4-flowered, with small bracts 

 and slender pedicels ; sepals ovate, mostly acute ; corolla 1 J' in length, pale 

 purple or rose-color, broadly dilated-campanulate above the calyx, with an 

 open throat and somewhat expanded limb, the lower lip bearded ; anthers 

 glabrous, expanding ; sterile filament exserted, curved above and very hirsute 

 with yellow hairs. — A well-marked and exceedingly handsome species, near 

 P. CohcBa ; cauline leaves 3-5' long and 2' wide. Arizona. Foot-hills of the 

 Trinity, West and East Humboldt Mountains, Nevada; 5-6,000 feet >altitude ; 

 ■June, July. Also from Southern Utah, (Palmer.) (779.) 



Pentstemon humilis, Nutt. (?) Gray, I. c, p. 69. Minutely puberu- 

 lent or somewhat glabrous, 3-10' high ; lower leaves ovate-spatulate or 

 oblanceolate, petioled, the upper oblong or linear-lanceolate, sessile and clasp- 

 ing, 'all acute or acuminate and entire ; peduncles rather -short, appressed, 

 2-5-flowered ; sepals ovate-lanceolate with usually a slender herbaceous re- 

 curved acumination, and with the pedicels viscid-pubescent ; corolla 4-8" 

 long, deep-blue, dilating upwards, somewhat bilabiate, the throat open and 

 without folds ; anthers glabrous, expanding ; sterile filament yellow-bearded. 

 —The specimens differ from those collected in Colorado in being more 

 puberulent and with the deep-purple corolla (4-7" long) rather less dilated, 

 the lower lip frequently somewhat bearded. East Humboldt Mountains, 

 Nevada; 8,000 feet altitude; July. (780.) 



Var. (?) Stem very slender, 4-8' high ; lower leaves ovate, abruptly 

 contracted into the petiole, the upper oblong, 4-8" long and 3" wide, clasp- 

 ing, all entire and abruptly acute, or obtuse and mucronate ; flowers light 



