264 SCROPHULARIACE^. Pentstemon. 



the clusters several-flowered, and peduncles and pedicels mostly very short : sepals ovate 

 and acute or lanceolate : corolla lilac or changing to violet ; the limb half or two-thirds 

 inch in diameter : sterile filament mostly bearded at the dilated tip : capsule firm-coria- 

 ceous and acuminate. — Lindl. Bot. Reg. t. 1285; Hook. El. ii. 97; Benth. in DC. I.e.; 

 Gray, Proc. Am. Acad. vi. 61 (exel. syn. P. secundiflorus), & Bot. Calif, i. 559. P. nitidus, 

 Dougl. ex Benth. in DC. 1. c. P. Fendleri, Gray in Pacif. E. Rep. ii. 168, t. 5, & Bot. Mex. 

 Bound. 114, excl. syn. — Plains of the Saskatchewan and Upper Missouri to the interior 

 of Oregon, and south "to Nevada, New Mexico, and the western borders of Texas. (Ad- 

 jacent Mex.) Seems to pass into 

 P. oaeruleus, Nutt. Low : leaves (even the radical) all from lanceolate to narrowly 

 linear (often 3 inches long and only a line or two wide) : thyrsus spiciform and usually 

 dense : sepals lanceolate-acuminate : corolla blue, varying occasionally to rose-lilac or 

 ■white : sterile filament much bearded above. — Gen. ii. 52 ; Benth. in DC. 1. c. ; Gray, 1. c. 

 P. angustif alius, Nutt. in Fras. Cat.; Pursh, PI. ii. 738. — Plains of Dakota and Montana to 

 Colorado at the base of the mountains. 



++ ++ +-I- Corolla an inch or less long, red, tubular or f unnelform, hardly bilabiate ; the roundish 

 or short-oblong lobes all alike, except that the two upper are rather more united: sepals ovate or 

 roundish, obtuse or acute: peduncles usually manifest and pedicels slender. 



= Sterile filament filiform, naked: corolla narrow-tubular, deep scarlet; lobes short, little 

 spreading. 



• P. oentranthif olius, Benth. Very glaucous : stem strict, leafy, 1 to 3 feet high : 

 leaves thick, from ovate-lanceolate or the lowest oblong to lanceolate-linear, the upper 

 with subcordate-elasping base : thyrsus virgate, elongated : corolla fully an inch long ; 

 the lobes (2 lines long) hardly longer than the width of the orifice. — Scroph. Ind. & Prodr. 

 1. c. ; Hook. Bot. Mag. t. 5142 ; Gray, 1. c. Chelone centranihifoUa , Benth. in Hort. Trans. ; 

 Lindl. Bot. Reg. t. 1737. — Open grounds, California, from Monterey southward, and W. 

 Arizona. 



= = Sterile filament dilated at tip and retrorsely bearded down one side : corolla funnelform, 

 and with rather large and rounded widely spreading lobes. 



P. puniceus, Gray. Very glaucous : stem stout, " 1 to 6 feet high," sparsely leafy : 

 leaves thick, oblong or the lowest obovate and the uppermost ovate, sometimes connate- 

 perfoliate : thyrsus virgate, interrupted, many-flowered : corolla almost an inch long, nar- 

 rowly funnelform, " brilliant scarlet ; " the limb two-thirds inch in diameter. — Bot. Mex. 

 Bound. 113, & Proc. 1. c. — Guadalupe Canon, Arizona, Thurber, E. K. Smith. 



P. Parryi. Less glaucous : stem virgate, a foot or two high ; leaves from oblong to nar- 

 rowly lanceolate ; the upper with auriculate or roundish partly clasping base ; radical 

 oblanceolate or spatulate : racemiform thyrsus more simple and fewer-flowered : corolla 

 narrowly funnelform, half to three-fourths inch long, " bright pink " or cherry -red ; the 

 limb half inch in diameter. — P. puniceus, var. ? Parryi, Gray, Bot. Mex. Bound. 1. c. — 

 Western Arizona, Parry, Palmer, Greene. Southern Nevada, Miss Searls, Palmer. Southern 

 Utah, Parry. Some specimens of this have been referred to the preceding, some to the 

 following species. . 



=P. 'Wrightii, Hook. Pale and somewhat glaucous or glaucescent: stems rather stout, 

 a foot or two high : leaves oblong or the lowest obovate (2 to 4 inches long, an inch or so 

 wide); upper cauline partly clasping by a roundish base: thyrsus virgate and elongated, 

 loosely flowered : sepals when in bloom with spreading tips : corolla bright rose-color, 

 about three-fourths inch long and with ampliate throat, the expanded limb three-fourths 

 inch in diameter. — Bot. Mag. t. 4001 (corolla too deep red). Gray, I.e.; PI. Serres, vii. 

 t. 685. — W. Texas and New Mexico, Wright, &c. 



++ *+ ++ ++ Corolla showy, inch and a half or more in length, ventricose-funnelform, somewhat 

 bilabiate, the upper lip rather smaller : sterile filament hooked at apex : sepals ovate or oblong- 

 lanceolato, barely acute : thyrsus virgate, with hardly any common peduncles to the few-flowered 

 clusters ; leaves glaucous, thickish, broad ; the upper and the floral rounded, all but the obovate 

 radical ones clasping or perfoliate : stem 2 to 4 feet high. 



- P. grandiflorus, Nutt. Leaves all distinct at base : pedicels short : corolla lilac or 

 lavender-blue, abruptly ventricose above the proper tube, which exceeds the calyx : sterile 

 filament minutely pubescent at the dilated apex. — Fras. Cat. & Gen. I.e.; Benth. 1. c. ; 

 Gray, 1. c. P. Bradhurii, Pursh, Fl. ii. 738. — Prairies, from Wisconsin, Minnesota, and Illi- 

 nois to Nebraska and Kansas. Capsule almost an inch long. 



