FIGWORT FAMILY 773 



52. 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. Submont. Mont. 

 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. veronicaefolius Greene. 

 Woods and mountain sides: Mont. Ida. n Wash. B.C. Submont. 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; calyx sparingly viscid-pubes- 

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

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

 sparsely hairy. Mountains: Ida. Submont. Jl. 



55. P. Wilcoxii Rydb. Stems glabrous or slightly 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 sinu- 

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

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

 brown beard. Plains: Mont. Ida. Plain. My-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 ventricose. Mountains: 

 Alta. B.C. Mont. 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; calyx densely viscid, 3 mm. long; lobes ovate, acumin- 

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

 form, scarcely ventricose. P. humilis brevifolius A. Gray. P. brevis A. Nels. 

 High mountains: Utah Nev. Ida. Mont. Subalp. 



58. 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. Plains: Wash. 

 Ida. Ore. Submont. My-Jl. 



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

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

 lanceolate or linear; calyx about 5 mm. long; corolla fully 15 mm. long, dark 

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

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

 Wyo. Ida. Submont. 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; calyx 4 mm. long; corolla deep- 

 blue, 15 mm. long, funnelform; lower lip slightly bearded; sterile stamen yellow- 

 bearded on the spatulate tip. P. humilis A. Gray, mainly, not Nutt. Plains 

 and hills: Alta. Colo. Nev. Plain Mont. Je-Au. 



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

 1-2 dm. high; basal leaves 2-4 cm. long, thick; calyx 5 mm. long; corolla about 

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

 Dry hillsides: Mont. Submont. Mont. Je-Jl. 



