riGWORT FAMILY 771 



33. P, Haydenii S. Wats. Stem 2-5 dm. high, stout, leaf}-, glabrous; lower 

 leaves, especially those of the shoots, narrowly hnear, the upper stem-leaves 

 linear-lanceolate; calyx glabrous, about 8 mm. long; lobes lanceolate, acuminate; 

 corolla blue, funnelform; sterile stamen bearded at the apex. Sand hills: Neb.— 

 Wyo. Plain. Je-Jl. 



34. P, caudatus Heller. Stem glabrous, 2-4 dm. high, leafy; lower leaves 

 4r-7 cm. long; stem-leaves lanceolate, linear-lanceolate or the upper ovate-lanceo- 

 late, acuminate; calyx about 5 mm. long; lobes lanceolate, scarious-margined, 

 long-acuminate; corolla violet, about 2 cm. long, funnelform; sterile stamen 

 bearded on the upper half. P. angustifolius caudatus Rydb. Hills: N.M.— 

 Colo. Submont. My-Je. 



35. P. angustifolius Pursh. Stems 1-3 dm. high, glabrous; leaves linear 

 or the upper linear-lanceolate, 5-10 cm. long, glabrous; calyx glabrous, about 

 5 mm. long; lobes lanceolate, acuminate, often with narrow scarious margins; 

 corolla about 15 mm. long, blue, hlac, or white, funnelform, scarcely ventricose; 

 sterile stamen bearded above. P. coeruleus Nutt. Plains: S.D.— Colo.— Alont. 

 Plain, My-Jl. 



36. P. petiolatus Brand. Stem about 1 dm. high, cespitose from a woody 

 root, puberulent, glandular in the inflorescence; petioles 1-1.5 cm. long; leaf- 

 blades 1-2 cm. long, cinereous-puberulcnt, sharply serrate, abruptly acuminate; 

 bracts ovate, acuminate, 1-3 mm. long; catyx-lobes ovate, 6 mm. long; corolla 15 

 mm. long, broadly funnelform; lower lip bearded within; sterile stamen bearded. 

 Hills: Nev. — s Utah. Subfnont. 



37. P. stenosepalus (A. Gray) Howell. Stem 1-5 dm. high, glabrous up 

 to the inflorescence; basal leaves petioled, 3-7 cm. long, glabrous; blades spatulate 

 or elliptic; stem-leaves sessile, lanceolate or linear-lanceolate, acimiinate; calyx 

 glandular-hirsute, 7-10 mm. long; lobes lance-subulate, attenuate; corolla 18-20 

 mm. long, funnelform, slightly ventricose, dull-white, rose, or purplish; sterile 

 stamen club-shaped, bearded above. P. glaitcus stenosepalus A. Gray. Moun- 

 tains : Wyo. — N.M. — -Ariz. — Utah. Mont. — Subalp, 



38. P. Erianthera Pursh. Stem stout, 1-4 dm. high, leafy, canescent and 

 more or less villous, especially above; basal leaves spatulate or ob lanceolate, 

 petioled, 5-10 cm. long; stem-leaves oblong or linear, entire or nearly so, grayish 

 puberulent and sometimes villous on the veins; calyx fully 1 cm. long; lobes 

 lance-subulate; sterile stamen mth verj^ long yellow hairs, tw^o-thirds its length; 

 throat long-bearded within. P. cristatus Nutt. Plains: N.D. — Neb. — Nev. — 

 Wash. Plain, My-JL 



39. P. saliens Rydb. Stems 2-3 dm. high, finely puberulent; basal leaves 

 petioled, about 5 cm. long; blades obovate or oblanceolate, finely puberulent; 

 stem-leaves oblanceolate to linear-lanceolate; calyx about 1 cm. long, villous- 

 glandular; lobes linear-lanceolate, acuminate; throat and sterile stamen long- 

 bearded. Plains: Mont. Plain, Je. 



40. P. Cleburnei A. Nels. Stem low, densely puberulent, 1-2 dm. high; 

 basal leaves entire or nearly so, petioled, ovate or elliptic, 2^ cm. long; stem- 

 leaves narrowly oblong; calyx miimtely glandular, about 8 mm. long; lobes lanceo- 

 late; corolla-throat short-villoiis wathin; sterile stamen long-\dIlous at the apex. 

 P. Jamesii A. Nels., not Benth. P. auricomus A. Nels. Dry plains and hills: 

 Wyo.— S.D.— Mont. Plain, My-Je. 



41. P. Moffattii Eastw. Stems 1-3 dm. high, densely grayish puberulent; 

 basal leaves petioled, ovate-sfjatulate, entire,^ grayish-puberulent; upper leaves 

 lanceolate; cal}^ glandular-hirsute; lobes linear-oblong or linear-lanceolate; 

 corolla purplish blue; sterile stamen moderately bearded towards the apex. P. 

 pseudo-humilis M. E. Jones, not Rydb. Dry table-lands: Utah — Colo. Sub- 

 mont, My-Je. 



42. P. Jamesii Benth. Stems 1-3 dm. high, gra^-ish puberulent, glandular 

 in the inflorescence; lower leaves narrowly linear-lanceolate, 3-10 cm. long; upper 

 stem-leaves linear or linear-lanceolate; cal>^ glandular-villous, 8-10 mm. long; 

 corolla glandular-villous; sterile stamen yellow-bearded at least half its length; 



