Pentstcmon. SCROPHULARIACE^. 269 



ment (lilatod, uncinate at tip. — Proc. Am. Acad. vi. 73. — New Mexico, Sandia Mountains, 

 Dit/dotc. Corolla in size and shape, and probably color, resembling that of P. glauciis. 



P. deustus, Dougl. (Completely glabrous ; the calyx at most obscurely granular-prui- 

 nose or glandular : stems a span to a foot high in tufts from a woody base, rigid : leaves 

 coriaceous, from ovate to oblong-linear or lanceolate (an inch or two long), irregularly and 

 rigidly dentate or acutely serrate, or some of them entire; upper cauline closely sessile: 

 thyrsus virgate or more paniculate, mostly many-flowered : peduncles and j)edicels short : 

 sepals from ovate to lanceolate, nearly nuirginless : corolla ochroleucous or dull white, 

 rarely with a tinge of purple, half inch or less long, either narrowly or rather broadly fun- 

 nelform ; the short lobes widely spreading. — Lindl. Bot. Keg. t. 1318; Benth. 1. c. ; Gray, 

 1. c, & Bot. Calif, i. 559 ; AVatson, Bot. King, 222, who has seen the " filament bearded 

 with j'ellow hairs." P. hcterander, Torr. & Gray, Pacif. R. Hep. ii. 123, t. 8, a narrow- 

 leaved form having the fifth filament in some flowers antherifcrous. — Dry interior region, 

 California, on the eastern side of the Sierra Nevada, and north to the borders of Brit. 

 Columbia and Montana 



P. heterodoxus. A span or more high, leafy, glabrous nearly up to the inflorescence : 

 leaves oval or oblong, obtuse, entire; the cauline closely sessile : thyrsus short, compact, 

 viscid-pubescent : sepals lanceolate : corolla 7 lines long, narrow-tubular, hardly dilated up 

 to the small limb, probably purplish: fifth filament filiform, resembling the others, in some 

 flowers completely antherifcrous. — P. Frcmonti, Gray, Bot. Calif, i. 022, not of Torr. & 

 Gray. — High mountain near Donner Pass, in the Sierra Nevada, California, Torrei/. 

 Species imperfectly known, from insuflicient specimens. 



++ ++ Leave.s from linear-s|Datiilate to obovate, or the uppermost sometimes ovate, entire : stems 

 low-cespitose or spreailing, leafy to summit, often suft'rutescent at base, few-fiowered : corolla 

 over iialf inch long, mostly purple or blue, narrowly funnelform: sterile tilament bearded down 

 one side. 



= Leaves green and mostly glabrous, broad, half to quarter inch wide. 

 P. Harbourii, Gray. Tufted nearly simple stems 2 to 4 inches high, puberulent : leaves 

 about 3 pairs, thickish, obovate, oval, or the uppermost sometimes ovate, these sessile by a 

 broad base: thyrsus reduced to 2 or 3 crowded short-pedicelled flowers : sepals ovate- 

 oblong, villous and somewhat viscid : corolla little bilabiate, with rather broad cylindra- 

 ceous throat and tube, barely twice the length of the round-oval lobes; lower lip bearded 

 within. — Proc. Am. Acad. vi. 71. — High alpine region of the Colorado Rocky Mountains, 

 Hall & Harbour, Parry. 



= = Leaves cinereous or canescent, a line or two wide: sepals lanceolate: corolla narrowlj- fun- 

 nelform, mostly thi-ce-fourths inch long: flowering along the short stems in the axils of the 

 leaves: slioit piihuicles leafy-bracteolate, 1-3-tiowered. 



P. pumilus, Nutt. Canescent (even to the marginless sepals) with a dense and fine 

 short pubescence: stems an inch or two high, erect or ascending, very leafy: leaves lan- 

 ceolate or the lower spatulate (the latter, including the attenuate base or margined petiole, 

 an inch or more long) : corolla with regularly funnelform throat, glabrous within : sterile 

 filament sparsely short-bearded, or more abundantly at the tip. — Jour. Acad. Philad. vii. 

 46; Gray, I.e. 07. — Rocky Mountains in Montana? "on Little Goddin River," Wjeth. A 

 small and few-flowered plant. 



Var. Thompsonise. Cespitose, from half inch to 4 inclics high, suffrutescent at 

 base: stems copiously flowering for their whole length: lowest leaves obovate; upper 

 lanceolate: corolla two-thirds to three-fourths inch long. — S. Utah, j1/;s. T/ioin/)son, Cajil. 

 Bishop (a dwarf and depressed form), also Slier, Palmer, a more developed and elongated 

 form, with corolla apparently bright blue. 



Var. incanus. A small and very white hoary form, few-flowered : leaves only 2 or 3 

 lines long, spatulate and obovate, more mucronate: corolla half inch long, slightly hairy 

 within down the lower side, somewhat as in the next. — Pahranagat Mountains, S. E. 

 Nevada, .1//.s,s S'-arh. S. W. Utah, Siler. 



P. CSespitosus, Nutt. Minutely cinereous-puberulent, spreading, forming depressed 

 broad tufts 2 to 4 inches high : leaves from narrowly spatulate to almost linear (3 to 8 

 lines long, including the tapering base or margined i)etioIc) : peduncles mostly secund and 

 horizontal, but with the flower upturned : sepals more acuminate, and the margins below 

 obscurely scarions : corolla tnbnlar-fnnnelform, and the lower side biplicate, the narrow 

 folds sparsely villous within: sterile filament strongly and densely bearde(L — Gray, Proc 



