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, 

 acimimate; mflorescence coryTnbiform ; involucres 7-8 mm. high, 12-18 mm. 

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

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

 B.C. Suhmont. — Mont. Je-Au. 



61. 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; mvolucres 7-8 mm. high, 12-18 mm. broad; ligules blue or violet, 

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



bubmont. — Mont. Jl-S. 



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

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

 sessile; heads corj-mbose; 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 

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

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

 tam sides: S.D.—N.M.— Utah— Wash. Suhmont.— 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, corj-mbiform; involucres 7-8 mm. high, 

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

 tains: Colo. Suhmont. Jl. 



56. E. glabellus Nutt. 



5-4 dm 



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

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

 beads 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. Suhmont.— 

 Alp. Jl-Au. 



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



cumbent at the base. 2-4 



4-10 



-— - — --J — 



heads 1-4 



x^ 10 mm. Droad, bracts linear, acute, softly hirsute, not glandular; ligules numer- 

 uTah^'^'E/ Jl-A ^^^^^^ ^ ™°'' ^^^^' ^^^^t^ins ^™o°g bushes: se 



nrr. iL?' i v?^- ^f^""^ several, simple, 3-4 dm. high; basal leaves 5-6 



=^"- ?' narrowly oblanceolate, often callous-denticulate; stem-leaves linear and 

 Sf 'q "i * ^'J ™°^- ^'Sh; ligules numerous and and very narrow, white, 



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



r..roK®/ ?'a ^"^*<="^dus Greene. Stem decumbent and reddish at the base, 

 rarel> ^ dm. high, usually monocephalous, hirsute throughout and glandular 

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

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



Sniliif ^° K'''^^^?'' !• ^^, °''^: V'"^^^: ^'^""^^ li^e^'-' sparingly hirsute as well ^ 

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



deri^'hS;t®!?^J,"^T!^''''^1^- ?^^™ ^-^^ ^- y^^^' sparingly hirsute throughout, 

 decumbent at the base: basal leavps nptin Pfl i;Tio«^_^KiJr^^.„^i„*„ *. x..i„i.- 



