riGWORT FAMILY 773 



62. P. ovatus Dougl. Stem 5-10 dm. high, more or less viscid above; basal 

 leaves petioled; blades ovate, 4-8 cm. long, dentate, sparingly pilose; inflorescence 

 a loose thyrsus; calyx somewhat viscid, 3-4 mm, long; lobes lance-ovate, acute; 

 corolla nearly 2 cm. long; lower lip bearded in the throat; sterile stamen yellow- 

 bearded above. Woods and banks: B.C.— Mont.— Ida. SabmonL—MonL 

 My-Jl. 



53. P, pinetorum Piper. Stem 6-10 dm. high, glabrous or nearly so; basal 

 leaves petioled; blades ovate or elliptic, mostly entire, glabrous, thickish, 1-7 

 cm. long; calyx viscid-pubescent, 4 mm. long; lobes ovate, short-acuminate; 

 corolla bright blue, varying to pink, 15-20 mm. long; lower lip bearded in the 

 throat; sterile stamen bearded on the spatulate apex. P. veronicacfolhis Greene. 

 Woods and mountain sides: Mont.— Ida.— n Wash.— B.C. SubmonL My-Jl. 



54. P. leptophyllus Rydb. Stem 3-5 dm. high, glabrous or sparingly 

 puberulent; lower leaves spatulate, petioled; upper stem-leaves ovate, 3-5 cm. 

 long, sharply serrate, thin, subcordate at the base; caljrx sparingly viscid-pubes- 

 cent, 3-4 mm. long; lobes ovate, short-acuminate; corolla light blue, elongate- 

 fimnelform, 20-22 mm. long; lower lip sparingly bearded within; sterile stamen 

 sparsely hairy. Mountains: Ida. Siihmont. Jl. 



55. P. Wilcoxii Rydb. Stems glabrous or shghtly puberulent above, 

 simple; leaves glabrous and somewhat glaucous, dentate with small sharp callous 

 teeth, acute, the basal ones petioled, lanceolate, the upper stem-leaves lanceolate 

 and slightly clasping; calyx-lobes lanceolate, acute, slightly margined and smu- 

 ately toothed below; corolla purple, about 15 mm. long; lower lip longer than the 

 upper, shghtly bearded within; sterile stamen club-shaped, with a short dense 

 brown beard. Plains: Mont. — Ida. Plain. ]\Iy-Jl. 



56. P. albertinus Greene. Stems about 2 dm. high, glabrous, only slightly 

 glandular in the inflorescence; stem-leaves elliptic-ovate or -lanceolate, subsessile; 

 calyx sparingly glandular, 3-4 mm. long; lobes ovate, acute, entire, only slightly 

 scarious-margined below; corolla light blue, scarcely ventncose. :Mountams; 

 Alta.— B.C. MonL Jl. 



57. P. brevifolius (A. Gray) A. Nels. Perennial, with a cespitose caudex; 

 stems ascending or decumbent at the base, 1-2 dm. high, glabrous; stem-leaves 

 obovate or elliptic, entire; eal>^ densely viscid, 3 mm. long; lobes ovate, acumin- 

 ate, slightly scarious-margined; corolla light blue, 1 cm. long, cyhndric-funnel- 

 form, scarcely ventricose. P. hnmilis brevifolius A. Gray. P. brevis A. Aels. 

 High mountains: Utah — Nev.^Ida. MonL — Subalp. 



68. P, attenuatus Dougl. Stem 3-5 dm. high, glabrous up to the inflores- 

 cence; basal leaves petioled, glabrous; blades spatulate or elliptic; stem-leaves 

 oblong or lanceolate or the uppermost ovate-lanceolate; calyx 6 mm. long; corolla 

 narrowly funnelform, 15-18 mm. long, bearded in the throat. Plams: \^asn. — 

 Ida. — Ore. SubmonL My-Jl. 



59 P pseudoprocerus Rydb. Stem glabrous up to the inflorescence, 1.5-3 

 dm hi^h; basal leaves petioled, 3-5 cm. long, thick, glabrous; upper stem-leaves 

 lanceolate or hnear; cab^ about 5 mm. long; corolla fully 15 mm. long, dark 

 purplish blue, cyhndric-funnelform, puberulent; lower lip sparingly bearded; ster- 

 ile stamen densely yellow-bearded at the spatulate end. Mountains: Mont.— 

 ■^yQ^ — Ida. SubmonL Je-Jl. 



60 P virens Pennell. Stem 1-3 dm. high, glabrous up to the inflorescence; 

 leaves glabrous, glaucescent, the lower petioled; blades 2-4 cm long; upper stem- 

 leaves lanceolate or oblong, usually denticulate; cal>-x 4 mm. long; coroUa deep- 

 blue, 15 mm. long, funnelform; lower lip shghtly bearded; sterile stamen yellovv- 

 bearded on the spatulate tip. P. hnmilis A. Gray mainly, not ISutt. Plams 

 and hills: Alta.— Colo.— Nev. Plain— MonL Je-Au. 



61 P aridus Rvdb. Stems puberulent or glabrate up to the inflorescence, 



1-2 dm. high; basafleaves 2-A cm. long thick; caly^ L^"^; ^""^^ '7T f L^^n? 

 12 mm. long, tubular-funnelform; sterile stamen slightly bearded at the end. 



Dry hillsides : Mont. SubmonL— Mont. Je-Jl. 



