Pentstemon. SCROPHULARIACE^. 269 



Slf ''Sron?''' '* ^^P;-^^"^- ^™- Aead. vi. 73. -New Mexico, Sandia Mountains, 

 Btgdou, Corolla in size and shape, and probably color, resembling that of P. glaucus. 

 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,S lea es 

 ZZT\r ""'' '? «blong-linear or lanceolate (an inch or two long), i reg'lrly and 

 [fvr us vTr r "" "'^ '"'T' '' '""^ '' *^^"^ '""'''^ ' ^^^'' -"^'"^ '^'-''y sessile: 



enaLfronf 7 T7 P^T"'"'"' '""'''^ ™any-flowered : peduncles and pedicel short 

 rivwitl . ^^^"'f 'r',"'"'^^ marginless: corolla ochroleucous or dull white, 

 n. fL Tt of purple, half inch or less long, either narrowly or rather broadly fun: 



r. T4 'V ,T /r^' w '^ 'P''^''^'^^^ Reg. t.l318; Benth. I.e.; Gray 



wit'h t.n f ■"'■ ?^i ^^^'T' ^"'- ^^"^' 222, who has seen the "filament bearded 

 with yellow hairs." P heterander, Torr. & Gray, Pacif. R. Rep. ii. 123. t. 8, a narrow- 

 leaved form having the fifth filament in some flowers antheriferous.-Dr; interior region 

 Ca iforma, 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: 

 2Z' "T ''^°^^°"S' o^t^se. ^"tire; 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 antheriferous. -P. Fremontl, Gray, Bot. Calif, i. 622, not of Torr & 

 bray- - High mountain near Donner Pass, in the Sierra Nevada, California, Ton-eu 

 bpecies imperfectly known, frorii insuflBcient specimens. 



^uV' ^T^' ^'■°"' ''"ear-spatulate to obovate, or the uppermost sometimes ovate, entire • stems 

 iv^ha'lf inch°lonrf.^'"/f' ^'"V' rr'"'^ °^'^'? suft'rr.tescent at base, few-fioweTeT: coronf 

 one side: ^' '' P"'"'' °'" ' ""'•'•"^'ly funnelform: sterile filament bearded down 



^ = 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 



II n."^^l°''- ^^'- ^''^^- ^^•'^1--Higli alpine region of the Colorado Rocky Mountains 

 JiaU & Harbour, Parry. 



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



Wp''"'.r°f''-V'"T-^r"';''^1 '"^^ '.«"»= «°^^'^'-'"ff ^'°"S the short stems in the axils of the 

 leaves : short peduncles leafy-bracteolate, 1-3-flowered. 



P. ptimUus, 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) : eorolla with regularly funnelform throat, glabrous within : sterile 

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

 4b ; Gray, 1. c. 67. — Rocky Mountains in Montana? " on Little Goddin River " Wyeth A 

 small and few-flowered plant ' 



Var. Thompsoniae. Cespitose, from half inch to 4 inches 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, 3frs. Thompson, cL. 

 Bishop (a dwarf and depressed form), also Siler, 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, Miss Searls. S. W. Utah, SUer. 

 '. caespitosus, Nutt. Minutely cinereous-puberulent, spreading, forming depressed 

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

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

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

 obscurely scarious : corolla tubular-funnelform, and the lower side biplicate, the narrow 

 folds sparsely villous within : sterile filament strongly and densely bearded. — Gray, Proa 



