512 SCROPHULARIACE^E pentstemo* 



mostly entire: thyrsus interrupted, leafy below, the clusters several-flower- 

 ed: peduncles and pedicels short: sepals lanceolate, gradually acuminate, 

 very acute, about 3 lines long, conspicuously ciliate: corolla blue or purple. 

 8-10 lines long, funnelform, with a broad tube longer than the calyx, and 

 abruptly enlarged throaty the lower lip bearded at base : sterile filament as 

 long as the others, bearded with yellowish hairs. Hillsides and plains, 

 Muddy Station, John Day Valley Oregon. 



P. aciim hiatus Dougl. Lindl. Bot. Reg. t. 1285. Glabrous and more 

 or less glaucous: stems stout, 6- 20 inches high: leaves coriaceous, some- 

 what cartilaginous-margined, entire; radical and lowest cauline obovate 

 or oblong, petioled; middle cauline lanceolate, 2-3 inches long; those sub- 

 tending the flowers long-acuminate from a broadly ovate cordate-clasping 

 base : thyrsus strict, leafy below, the clusters several-flowered : peduncles 

 and pedicels mostly very short: sepals ovate and acute to lanceolate and 

 acuminate, 3-5 lines long : corolla lilac or violet, 8-10 lines long, funnelform, 

 the throat very gradually enlarged from the broad tube: sterile filament 

 usually bearded at the enlarged apex: capsule firm-coriaceous, acute, lon- 

 ger than the calyx. Sandy plains, Brit. Columbia to eastern Oregon, Ne- 

 vada, Nebraska and the Saskatchewan. 



P. miser Gray Syn. Fl. Supp. 441. Pruinose-pubescent and the in- 

 florescence glandular-viscid but not villous : stems 10-18 inches high : radi- 

 cal leaves spatulate or obovate ; cauline lanceolate, an inch or less long: 

 sepals lanceolate, merely acute : corolla violet or bluish, only half inch long, 

 rather tubular than funnelform, the throat little dilated: spreading lobes 

 short ; base of the lower lip moderately villous ; sterile filament with dilated 

 and curved tip hardly projecting from the throat densely yellow-bearded 

 down one side. Along the Malheur river eastern Oregon. 



P. pruinosus Dougl. Lindl. Bot. Reg. t. 1280. Pruinose-pubescent: 

 stems about a foot high : leaves from ovate to oblong, glaucescent, an inch 

 or two long ; the radical and lowest cauline and also uppermost cauline 

 commonly entire ; the others acutely and rigidly dentate or denticulate : 

 thyrsus virgate, interrupted : peduncles and pedicels short, these and the 

 lanceolate attenuate-acuminate sepals viscidly villous : lower lip of the 

 deep blue corolla slightly hairy within. Interior of Oregon and Washing- 

 ton. Little known. 



P. ovatus Dougl, Hook. Bot. Mag. t. 2903, puberulent or pubescent : 

 stems stout, 2-4 feet high : leaves ovate, the radical and lowest cauline 

 slender-petioled, the others sessile, all with more or less cordate base and 

 coarsely toothed, the blade 2-4 inches long, bright green: thyrsus panicu- 

 late, the lower peduncles often longer than the clusters : pedicels short, 

 glandular: sepals ovate to lanceolate, acute or acuminate, about 2 lines 

 long, more or less glandular: corolla bright blue, 8-10 lines long, tubular - 

 funnelform, minutely hairy outside, moderately bilabiate, the lower lip 

 bearded at the base : sterile filament as long as the others and bearded at 

 the apex: capsule ovoid, acuminate, longer than the calyx. On the banks 

 of the Willamette river near Portland Oregon to Brit. Columbia and Idaho. 



P. Whitedii Piper Bot. Gaz. xxi 490. puberulent below and glandu- 

 lar pubescent above : stems several from a lignescent base 8-12inches high : 

 radical leaves glabrous or sparingly puberulent, narrowly spatulate-lanceo- 

 late, acute, saliently dentate with large obtuse teeth, or rarely entire or 

 nearly so, 2-4 inches long: cauline about 4 pairs, ovate-lanceolate, acute, 

 entire or sparingly dentate, clasping at base : thyrsus virgate, interrupted : 

 peduncles and pedicels short : sepals broadly lanceolate, acute, 3-4 lines 

 long : corolla bright blue, bilabiate 7-10 lines long, glandular-pubescent out- 

 side, the lobes puberulent within, throat sparsely bearded: sterile filament 

 bearded on one side nearly its whole length with yellow hairs. On rocky 

 Boil, near Wenatche, eastern Washington. 



