516 SCROPHULARIACEJE PENTSTBMON 



purple, an inch long, funnelform, with rather long tube and ample throat: 

 stamens and inside of corolla glabrous, the sterile filament sometimes 

 bearded at the apex: capsule ovoid, about twice as long as the calyx. On 

 cliffs and rocky banks, Oregon and Washington. 



P. triphyllus Dougl. Lindl. Bot. Beg. t. 1245. Stems slender about 

 a foot high, usually simple: cauline leaves lanceolate or linear, an inch or 

 more Ion , rigid, from denticulate to irregularly pinuatifid-laciniate: the up- 

 per sometimes ternately verticillate, sometimes alternate: thyrsus narrow, 

 loosely paniculate: sepals lanceolate, acuminate: corolla comparatively small 

 and narrow, 6-9 lines long: sterile filament densely bearded at the apex. 

 Rocky banks, Oregon to Brit. Columbia. 



P. gracilentns Gray Pac. R. Rep. vi, 83. Glabrous: stems slender, 

 from a lignescent base, a foot or more high, r aher few-leaved, naked above, 

 terminating in loose and rather simple paniculate thyrsus: leaves glabrous 

 and green, entire, lanceolate or the upper linear and the lower sometimes 

 oblong, all narrowed at base: peduncles viscid-puberulent, 2-5 -flowered, 

 the lower elongated: pedicels shoii: corolla blue or violet, halfmch long, 

 slender-fimiielform, moderately bilabiate, its lobes only 2 lines long, mode- 

 rately spreading: sterile filament slightly bearded. Mountains of southern 

 Oregon and adjacent California. 



P. Roezli Regel Act. Hort. Petrop, ii, 326. Smooth below, the inflor- 

 escence more or less pubescent and glandular : stems 10-18 inches high from 

 a woody base: leaves all lanceolate or linear, or the lower oblanceolate, en- 

 tire, 1-3 inches long; thyrsus either narrow, or more diffuse and paniculate 

 with divergent branches: sepals ovate to lanceolate, about 2 lines long: corolla 

 blue, 8-10 lines long, funnelform, with rather long tube and campanulate 

 throat, sterile filament glabrous. On gravelly banks of streams, southern 

 Oregon and^northern California. 



P. Cnsickii Gray Proc, Am. Acad. xvi, 106. Pale and very minutely 

 pruinose-puberulent: stems a foot or less high, many from a barely lignescent 

 candex, strict, equably leafy up to the racemiform loose thyrsus: leaves very 

 narrowly linear, an inch or two long by a line or more wide, or some of the 

 lower broader and spatulate: peduncles 1-2-flowered: sepals ovate, acuminate, 

 glabrous, not glandular: corolla barely 9 lines long, bright blue with purple 

 tube, a moderately enlarged throat and short lobes: sterile filament spatulate- 

 dilated at the very tip: very glabrous. On the slopes of Eagle Creek Moun- 

 tains, northeastern Oregon. 



P. Kingii Watson Bot, King 2"23 Pruinose or glandular-pubescent, at 

 least below, stems numerous from a shrubby base, ascending, 4-8 inches 

 high: leaves oblanceolate, mostly acute, entire, sessile with a narrowad base, 

 the lowermost somewhat spatulate and short-petioled, 1-2 inches long by 2-4 

 lines wide: thyrsus secund, short and rather leafy at base: peduncles 1-4-flow- 

 ered: sepals ovate or oblong-lanceolate, more or less acuminate: corolla 8 

 lines long, purple, dilated upward, somewhat bilabiate : sterile filament 

 flattened toward the apex, glabrous. In the mountains of eastern Oregon 

 to Nevada. 



P. azureus Benth. PI. Hartw. 327. Glabrous and glaucous, rarely 

 pruinose-puberulent: stems erect or ascending from a woody base, 1-3 feet 

 high: leaves from narrowly- to ovate-lanceolate or even broader, the upper 

 ones wider at base, the lowest more or less petioled, 1-2 inches long: thyrsus 

 virgate, loose, usually elongated : sepals ovate or oblong, scarious-margined, 

 with or without a conspicuous acumination, about 2 lines long: corolla 1-1 % 

 inches long, azure-blue verging or changing to violet, the base sometimes red. 

 disk, broadly funnelform, the expanded limb sometimes an inch in diameter: 



