SOROPHULARIACE^. (FIGWORT FAMILY.; 270 



5. P. StrictUS, Benth. Glabrous, or minutely pruinose, more or less glau- 

 cous: stem slender, 6 to 20 inches high : rudiial leaves from oval to upatulale; 

 cauliue narrowly lanceolate or linear; floral reduced to small suliulate bracta 

 of the elongated narrow and loose ih/jrsus: sepals ovale or oral, oil use: cttrolla 

 about an inch long; the throat stronrjhj amplinte: anthers either thickly or 

 sparsely comose with very long flexuous hairs: sterile filament naked or'wiih 

 some similar slender hairs. — Mountains of \\\ Wyoming to S. W. Utah. 



6. P. glaber, Pursh. Glaucous or (jlaucescent ami vtry (jluhrous: Ktems a 

 foot or two high : leaves mostly oblong-lanceolate or the upper ovate-lanceo- 

 late : thi/rsus elongated and manif-floicered : sepals from orbirular-orate and 

 merel}! acute to ovate-lanceolate or strongly acununate hum a broad ish base ; 

 corolla \ to \^ inches long, the throat ampliate : anthers from glaljrous to 

 sparsely hirsute. — From Nebraska and the Dukotas to Colorado, Arizona, 

 and west to Oregon and California. 



Var. alpinus, Gray. A span high : cauliue leaves from narrowly to 

 broadly lanceolate : thyrsus shortened and few-tlowered. — Alpine region.s 

 from the Yellowstone to Pike's Peak. 



Var. cyananthus, Gray. Usually tall: leaves all broad; the cauline 

 ovate or subcordate and ovate-lanceolate : thyrsus dense : sepals nmch acumi- 

 nate or narrow : anthers and sterile filament from hirsute to nearly glabrous. 

 — Proc. Am. Acad. vi. 60. P. cyananthus. Hook. Wyoming and Colorado 

 to the VN'asatchin Utah. 



* * * * Anthers dehiscent from base to apex and confluent, glabrous, eiplanate 



after dehiscence: herbs or rarely suffrutescent at base. 

 H- Glabrous throughout even to pedicels and calyx : leaves all entire, from linear 

 to ovate, glaucous or pale: stems simple and erect: thyrsus virgate or con- 

 tracted: corolla less than an inch long. 



++ Corolla abruptly campanvdate-inflated , rather strongly bilabiate. 



7. P. secundiflorUS, Benth. Afoot or tiro high, including the elongated 

 and racemiform strict many flowered thyrsus: cauline leaves narrowly lanceo- 

 late ; radical spatulate : peduncles 1 to 3-flowered : sepals ovate or oblong, 

 with somewhat scarious but entire margins : corolla u-ith mnrow proj^er tube 

 nearly twice the length of the calyx: sterile filament glabrous or minutely 

 bearded at the dilated tip. — Mountains of Colorado. 



8. P. Hallii, Gray. Resembling the last, but lou-er: leave." thickish. 

 linear and linear-spatulate : thyrsus short and more spiciform, 5 to \5-fournd, 

 obscurely viscid : sepals broadly ovate and with widely scarious erase margins: 

 corolla with thickish and inconspicuous proper tube shorter than the calyx: sterilo 

 filament short bearded from apex downward. — Proc. Am. Acad. vi. 71 

 Mountains of Colorado, at 10,000 to 12,000 feet. 



•M. ++ Tube of corolla gradually and moderately dilated into the funnelform 

 throat ; lobes obscurely bilabiate. 



9. P. acuminatus, Dougl. Glaucous, 6 to 20 inches hijzh, generally 

 stout and rigid, leafy : leaves coriaceous ; radical and lowest cauline oforale or 

 oblong ; upper cauline from lanceolate to broadly ovate, or the upj^er cordnte-rlnsp- 

 ing, these mostly acute or acuminate : thyrsus strict, interrupted, leafy below, 

 naked above : sepals ovate and acute or lanceolate : corolla lilac or changing 



