hENTSTEJiox SCROPHULARIACE.& 513 



P. atteuuatus Dougl. Lindl. Bot. Keg. t. 1295. Stems strict, 1-2 feet 

 high ; tbe summit and inflorescence pubescent and viscid: lower leaves 

 narrowly oblong or ovate to lanceolate, the blade 6-18 lines long, on peti- 

 oles as long or longer; the upper linear to ovate-lanceolate, sessile: thyrsus 

 spiciform, interrupted, the peduncles and pedicels short: sepals ovate or 

 oblong-lanceolate, acute or acuminate, 2-3 lines long, narrowly scarious- 

 margined: corolla narrowly funnelform, 8-11 lines long, blue, oc'hroleucous 

 or yellow: sterile filament bearded at the apex. Interior of Oregon to 

 Idaho. 



P. confertus Dougl. Lindl. Bot. Reg. t. 1260. Glabrous throughout 

 or the inflorescence sometimes pubescent or puberulent: stems slender, 

 6-20 inches high: lower leaves narrow-lanceolate, attenuate below to nar- 

 row petioles, including the petiole 1-2 inches long, mostly entire ; the 

 middle cauline largest, lanceolate, sessile by a broad base : thyrsus spici- 

 form, interrupted, of 2-5 verticilastriform dense many-flowered clusters: 

 pedicels very short : sepals from oblong-lanceolate to broadly ovate, acute 

 or acuminate, with broad scarious margins commonly erose or lacerate : 

 corolla very narrow, 4-6 lines long, yellow, lower lip conspicuously bearded 

 within: sterile filament shorter than the others, dilated at the summit: 

 capsule acuminate-ovoid, longer than the calyx. Prairies of eastern 

 Oregon to Brit. Columbia and the Rocky Mountains. 



Var. gtobosus Piper Bull. Torr. Club xxvii, 397. Inflorescence a 

 dense head-like panicle of many short-pedicelled flowers, rarely with a 

 second verticiilate cluster below : corolla intense blue, nearly an inch long. 

 Wallowa Mountains, eastern Oregon. 



P. procerus Dougl. ex Graham in Edinb. Phil. Jour. 1829. P. 

 confertus var. caruleo-purpureu* Gray. Glabrous throughout : sterna slen- 

 der, 2-12 inches high : leaves lanceolate, the lower ones petioled, 1-2 inches 

 long, those of the middle of the stem largest, all usually entire : flowers in 

 about 2 dense verticiilate clusters: sepals oblong or spatulate, with broad 

 scarious erose margins, abruptly acuminate or 3-toothed at the apex, about 

 2 lines long: corolla bright blue and violet, about 8 lines long, tubular- 

 funnelform, the lower lip bearded within : sterile filament as long as the 

 others and bearded at the apex. On high mountains and plains, Brit. 

 Columbia to California and the Rocky Mountains. 



P. pulckellus Greene Pitt, iii, 310. Green and glabrous throughout : 

 flowering stems slender, from a much branched woody base with numer- 

 ous short sterile branches, 2-6 inches high: leaves coriaceous, entire, the 

 lowest from ovate to oblanceolate, 6-12 lines long including the slender 

 petiole; those of the stem 2-3 pairs, oblong or lanceolate-oblong, sessile: 

 thyrsus short and interrupted: flowers numerous, on very short pedicels: 

 sepals obovate, abruptly acute, with scarious more or less erose margins: 

 corolla bright blue to purple, about 6 lines long, with narrow throat and 

 abruptly spreading limb, the throat sparsely hairy inside. On alpine 

 summits of the Cascade and Blue Mountains of Oregon and Washington. 



P. pauiculatus. Glabrous throughout: stems stout, very numerous, 

 shrubby below, forming loose bushy clumps, 1-2 feet high : leaves linear- 

 lanceolate, entire or sparsely dentate, all nearly alike, 1-2 inches long, 

 2-6 lines wide, only the uppermost ones sessile: flowers very numerous, 

 in open thyrsoid leafy panicles : pedicels short : sepals ovate or oblong to 

 lanceolate, acute or acuminate, with narrow scarious margins, 3-4 lines 

 long : corolla ochroleucous, 5-6 lines long, tubular, the limb scarcely spread- 

 ing, puberulent outside, the lower lip bearded within: sterile filament 

 longer than the others, bearded at the apex. On the high ridge between 

 the Klickitat Valley and the Columbia river, opposite The Dalles Oregon. 



P. humilis Nutt. Gray Proc. Am. Acad, vi, 69. Minutely puberulent 



