770 SCROPHULARIACEAE 



23 P. Palmeri A. Gray. Stem 6-10 dm. high, glabrous; lower leaves 

 spatulate, petioled, the upper ovate, lanceolate, or oblong, sessile or perfoliate, 

 sharply dentate; calyx glandular-pubescent; lobes broadly ovate, cuspidate, 

 scarious-margined; corolla cream-colored, tinged with pink, from a narrow, short 

 tube, strongly ventricose, about 2 cm. long; sterile stamen densely yellow-bearded. 

 Dry regions : s Utah Nev. Calif. Submont. Je-Jl. 



24. P. grandiflorus Nutt. Stem 6-12 dm. high, glabrous; basal leaves 

 glaucous, glabrous, obo,vate, entire; upper stem-leaves broadly ovate, oval, or 

 rounded; calyx about 5 mm. long, glabrous; lobes ovate, acute; corolla about 4 

 cm. long, pink, strongly ventricose, with a narrow tube; sterile stamen hooked 

 and minutely pubescent at the apex. P. Bradburyi Pursh. Prairies and plains: 

 Wis Mo. Okla. Colo. Wyo. Plain. My-Jl. 



25. P. Hallii A. Gray. Caudex cespitpse; stem glabrous, 1-2 dm. high; 

 basal leaves linear-oblanceolate, obtuse, thick, glabrous; stem-leaves narrowly 

 linear-lanceolate or linear; inflorescence short; calyx 4 mm. long; lobes broadly 

 obovate, abruptly acuminate, with scaripus erose margins; corolla 15-20 mm. long, 

 ventricose, without distinct" tube; sterile filament short-bearded. High moun- 

 tains: Colo. Utah. Subalp.Alp. Jl-Au. * 



26. P. cyathophorus Rydb. Stem very strict, 3-4 dm. high; basal leaves 

 and lower stem-leaves spatulate, petioled, 3-6 cm. long, the others ovate or orbic- 

 ular, often abruptly acuminate or mucronate; calyx 6-8 mm. long; lobes lanceo- 

 late, scarious-margined and more or less erose-dentate ; corolla pink-purple, 12- 

 15 mm. long, little oblique and scarcely ventricose; sterile stamen with a yellow 

 beard. Mountains: n Colo. s Wyo. Submont. Mont. Jl. 



27. P. pachyphyllus A. Gray. Stem 3-6 dm. high, stout, glabrous and 

 glaucous; basal leaves petioled, 6-10 cm. long, glabrous and glaucous; blades 

 thick, oval, rounded at the apex; lower stem-leaves oblong or elliptic, the upper 

 ones and the bracts oval, the latter usually scarious-margined; calyx glabrous, 

 5 mm. long; corolla 15-20 mm. long; sterile stamen spatulate, densely bearded. 

 F. acuminatus major Benth. P. acuminatus congestus M. E. Jones. Plains: 

 Utah. Ariz. Son. Je. 



28. P. acuminatus Dougl. Stem glabrous and glaucous, strict, 2-4 dm. 

 high; lower leaves obianceolate, glabrous, glaucous, 2-6 cm. long; upper leaves 

 and bracts broadly ovate or cordate, abruptly acuminate, strongly veined; calyx 

 glabrous, 8-10 mm. long; corolla blue or purple, about 2 cm. long, funnelform. 

 Plains: Wash. Alta. Ida. Nev. Son. My-Jl. 



29. P. nitidus Dougl. Stem 2-3 dm. high, glabrous, glaucous; lower leaves 

 obianceolate, 3-5 cm. long, glabrous, entire; upper leaves and bracts lanceolate 

 or ovate, acute or abruptly acuminate; calyx glabrous, 4-6 mm. long; corolla 

 blue, 15-18 mm. long, obliquely funnelform. Plains: Man. S.D. Wyo. 

 Wash. Alta. Plain. My-Jl. 



30. P. arenicola A. Nels. Stems 2-3 dm. high, glabrous and glaucous; 

 lower leaves petioled, obianceolate or spatulate, the middle ones oblong and the 

 uppermost lanceolate; calyx glabrous, 4 mm. long; sepals lanceolate, acute, 

 slightly scarious; corolla 12-15 mm. long; sterile stamen obliquely spatulate, 

 bearded. Sand-dunes: Wyo. Plain. Je. 



31. P. secundiflorus Benth. Stem glabrous and glaucous; basal leaves 

 obianceolate, 3-7 cm. long, glaucous and glabrous; stem-leaves lanceolate to 

 ovate-lanceolate, more or less acuminate; inflorescence secund; calyx 5-6 mm. 

 long, glabrous, often somewhat bluish; corolla about 2 cm. long, funnelform, 

 bluish purple; sterile stamen club-shaped, curved, densely bearded. Dry plains 

 or hills: Wyo. N.M. Utah. Submont. Mont. 



32. P. Fendleri A. Gray. Stem glabrous and glaucous, 1-2 dm. high; 

 basal leaves petioled, 3-6 cm. long; blades oval or ovate; stem-leaves ovate to 

 lanceolate; bracts small, lanceolate; calyx 4 mm. long; corolla 15-18 mm. long, 

 almost salverform; sterile stamen club-shaped, densely yellow-bearded. Dry 

 plains: Colo. w Tex. N.M. (? Calif.). My-Jl. 



