264 SCROPHULARIACE^. Pentstemon. 



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

 and acute or lanceolate : corolla lilac or chantjfing 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. Fl. ii. 97 ; Bcnth. in UC. I.e.; 

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

 Dougl. ex Benth. in DC. 1. c. P. Fendleri, Gray in Pacif. R. Rep. ii. 1G8, 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. casruleus, 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. amjiisti/olius, Nutt. in Fras. Cat.; Pursh, Fl. ii. 738. — Plains of Dakota and Montana to 

 Colorado at the base of the mountains. 



++ ++ +-f- Corolla an inch or less long, red, tubular or funnelform, hardly bilabiate; tlie roundisli 

 or i^liort-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. centranthif 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-clasping 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 centranthiJuUa , Benth. in Hort. Trans. ; 

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

 Arizona. 



== = Sterile filament dilated at tip and retrorsely l)earded 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 aiul 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 tliyrsus 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. ? Parri/i, Gray, Bot. Mex. Bound. I. c. — 

 Western Arizona, Parri/, Palmer, Greene. Southern Nevada, Aliss 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 aiul 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.; Fl. Serres, vii. 

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



++ -t-i- ^-)- ++ Corolla showy, inch and a half or more in length, ventricose-funuelform, somewhat 

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

 lanceolate, 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. 1. c. ; Benth. I.e.; 

 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. 



