906 CARDUACEAE 



50. E. macranthus Nutt. Stem 4-8 dm. high; basal leaves oblanceolate, 

 petioled, 5-10 cm. long; upper stem-leaves sessile, ovate to linear-lanceolate r 

 acuminate; inflorescence corymbif orm ; involucres 7-8 mm. high, 12-18 mm. 

 broad; ligules very numerous, 10-12 mm. long, lilac or bluish purple. E. leio- 

 phyllus Greene, a broad-leaved form. Mountains: Alta.N.M. Ariz. Ore. 

 B.C. Submont.Mont. Je-Au. 



51. E. speciosus DC. Stem 3-5 dm. high; basal leaves linear-oblanceolate, 

 ciliate, 5-10 cm. long, petioled; upper leaves sessile, narrowly lanceolate; heads 

 corymbose; involucres 7-8 mm. high, 12-18 mm. broad; ligules blue or violet, 

 numerous, 12-18 mm. long. Mountains: Alta. Colo. Utah Ore. B.C. 

 Submont. Mont. Jl-S. 



52. E. conspicuus Rydb. Stem 3-5 dm. high, hirsute with long hairs, very 

 leafy; lower leaves oblanceolate, 5-10 cm. long, petioled; upper leaves lanceolate, 

 sessile; heads corymbose; involucres 7-8 mm. high, 15-20 mm. broad; ligules 

 bluish purple, very numerous, narrow, 10-12 mm. long. Mountains: Mont. 

 Colo. Wash. Mont. Jl-S. 



53. E. subtrinervis Rydb. Stem 3-6 dm. high, hirsute with short hairs; 

 lower leaves oblanceolate, 5-10 cm. long, hirsutulous on both sides; inflorescence 

 corymbif orm; involucres 7-8 mm. high, 12-20 mm. broad; ligules numerous, 

 violet, rose-colored or purplish, rarely white, about 1 cm. long. Wooded moun- 

 tain sides: S.D.N.M. Utah Wash. Submont.Mont. Jl-Au. 



54. E. incanescens Rydb. Stem simple, 1.5-3 dm. high, mostly ascending, 

 densely pubescent, leafy; basal leaves oblanceolate or spatulate; stem-leaves 

 about 5 cm. long and 1 cm. wide, oblong to lanceolate, sessile, and somewhat 

 clasping; heads 1-4; involucres about 7 mm. high and 15 mm. broad; bracts 

 cinereous; ligules pale blue or violet, about 15 mm. long. Mountains: Colo. 

 Mont. Jl-Au. 



55. E. Vreelandii Rydb. Stem 6-7 dm. high, simple, sparingly pubescent 

 and puberulent; lower leaves petioled, oblanceolate, the rest sessile, lanceolate, 

 somewhat clasping; inflorescence leafy, corymbif orm ; involucres 7-8 mm. high, 

 15^-18 mm. broad; ligules fully 1 cm. long, very numerous, dark purple. Moun- 

 tains: Colo. Submont. Jl. 



56. E. glabellus Nutt. Stem decumbent at the base, 1.5-4 dm. high, gla- 

 brous or sparingly hirsute above; basal leaves oblanceolate, 5-10 cm. long, gla- 

 brous; stem-leaves narrowly linear-lanceolate, the upper often much reduced; 

 heads 1-3; involucres 6-7 mm. high, 1-1.5 cm. broad; bracts linear, acuminate; 

 ligules purple. Hills and mountains: Sask. Wis. N.M. Mack. Submont. 

 Alp. Jl-Au. 



57. E. fruticetorum Rydb. Perennial, with a cespitose rootstock; stem de- 

 cumbent at the base, 2-4 dm. high, rather densely and finely hirsute; basal leaves 

 narrowly oblanceolate, 4-10 cm. long, petioled, finely hirsute on both sides; 

 stem-leaves sessile, lanceolate to linear; heads 1-4, long-peduncled; involucres 

 12-15 mm. broad; bracts linear, acute, softly hirsute, not glandular; ligules numer- 

 ous, narrow, lilac or white, about 8 mm. long. Mountains among bushes: se 

 Utah. Mont. Jl-Au. 



58. E. Earlei Rydb. Stems several, simple, 3^4 dm. high; basal leaves 5-6 

 cm. Jong, narrowly oblanceolate, often callous-denticulate; stem-leaves linear and 

 sessile; heads about 3, 6 mm. high; ligules numerous and and very narrow, white, 

 about 8 mm. long. E. strigulosus Rydb. (Fl. Colo.). Meadows: Colo. Jl. 



59. E. rubicundus Greene. Stem decumbent and reddish at the base, 

 rarely 2 dm. high, usually monocephalous, hirsute throughout and glandular 

 above; basal leaves spatulate or oblanceolate, 3-5 cm. long, glabrous except the 

 ciliate margins and the midrib beneath; stem-leaves oblong or lance-oblong, 

 sessile; involucre about 18 mm. broad; bracts linear, sparingly hirsute as well as 

 glandular-puberulent; ligules pink, very numerous, 8-10 mm. long. Mountains: 

 Colo. Subalp.Alp. Jl-Au. 



60. E. eximius Greene. Stem 2.5-5 dm. high, sparingly hirsute throughout, 

 decumbent at the base; basal leaves petioled, linear-oblanceolate to spatulate, 



