THISTLE FAMILY 907 



glabrous except the ciliate margins, 3-10 cm. long; stem-leaves linear-lanceolate, 

 sessile; heads 1-9; involucre about 15 mm. wide, glandular-pubenilent, only 

 with a few hirsute hairs below; bracts linear-subulate; ligules usually light purple, 

 numerous, about 8 mm. long. Meadows: Wyo.— Colo.— e Utah. Submont.— 

 Subalp. Jl-Au. 



61. E. Smithii Rydb. Stem simple, glabrous or nearly so below, glandular- 

 puberulent above; basal leaves 6-10 cm. long, petioled, oblanceola,te or spatu- 

 late: upper stem-leaves lanceolate, sessile, more or less claspmg; heads 1-5; invo- 

 lucre about 6 mm. high; ligules purplish, 10-12 mm. long. Mountams: Colo.— 

 Utah. Submont. — Mont. 



62. E. formosissimus Greene. Stem stout, about 3 dm. high, rather 

 densely long-hirsute; basal leaves oblanceolate, 5-10 cm. long, sparingly hirsute 

 on both sides; stem-leaves lanceolate, sessile; heads 1-3; involucre about 18 mm. 

 broad; bracts linear, usually copiously hirsute as well as glandular-puberulent; 

 ligules lilac or rose-colored, fully 1 cm. long. Mountams: Colo,— JN.M. bub- 

 mont. Jl-Au. 



63. E. viscidus Rydb. Stem ascending, 1-5 dm. high, more or less hirsute 

 and glandular-puberulent; basal leaves 3-5 cm. long, oblanceolate, dark green, 

 sparingly hirsute and ciliate on the entire margins; stem-leaves lanceolate, ses- 

 sile' heads few; involucres about 8 mm. high and 15 mm. broad; bracts very 

 numerous, narrowly Unear, acuminate; ligules very numerous, pale bhie or rose- 

 colored, about 8 mm. long and 5 mm. wide. E. iodanthus Greene. E. htrtuosus 

 Greene, a less glandular form. Mountains: Colo.— N.M.— Utah— Ariz. Mont. 

 — Subalp. Je-Au. 



64. E. philadelphicus L. Stem 3-10 dm. high, branched above, soft-hir- 

 sute; basal leaves oblanceolate, 5-15 cm. long, scarcely petioled, softly pubes- 

 cent; lower stem-leaves oblong, the upper lanceolate, acute, half clasping; invo- 

 lucres 4-5 mm. high, 8-12 mm. broad, sparingly hirsute; bracts broadly linear, 

 acute; ligules white or pinkish, 5-6 mm. long. Wet fields, meadows, and wood- 

 lands: Lab.— Fla.— Calif.— B.C. My-Au. 



. 65. E. purpureus Ait. Stem 3-10 dm. high, sparingly hirsute or glabrate 

 above; basal leaves 8-15 cm. long, oblanceolate, acute, sparingly pubescent; 

 uDoer leaves triangular-lanceolate or ovate, with a broad cordate base, acumin- 

 ate; involucres 5 mm. high, 10-12 mm. broad; bracts broadb^ linear; ligules rose 

 or reddish purple, 8-10 mm. long. Wet meadows: Hudson Bay— Mont.— \A ash. 



^Mack. Je-Jl. , , . ^ ^ . 



66 E. asper Nutt. Stem strict, erect, 2-3 dm. high, shortly hirsute-stngose ; 

 lower 'leaves linear-oblanceolate, 3-6 cm. long, entire or rarely °^i""t^ely den- 

 ticulate, short-pubescent; upper stem-leaves mear-lanceo ate, acuminate, heads 

 n InvolucresVe mm. high, about. 1 cm. wide, hirsute; l'g^«f,^'h^t^;7-8 ^JJ^; 

 long. E. anicularum Greene. Prairies and hills: Man.— N.D.— Alta. Plain 



■Submont. Je-Jl. 



dm 



lanceolate winged-petioled, 5-10 cm. long; upper leaves lanceolate or linear- 

 aSceo a e- Ss l4; involucres 7-9 mm. high, 15-20 mm broad; ligules numer- 

 ous p^^ or purple, 10-12 mm. long. Plains and meadows: Mont.-Wyo.- 

 Utah— Ida. Plain— Submont. J&-Au. , . ^ , . , -^i, i, . 



68 E. consobrinus Greene. Stem strict, 3-6. dm. high, hirsute with short 

 SDreading hairs; lower leaves oblanceolate, 5-8 cm. long, entire or denticulate, 

 Et-hSute; stem-leaves linear-lanceolate, sessile ; myolucres 6-8 mm. high, 12- 

 18 mm broad; ligules numerous, whlte^ turmng pinkish, about 1 "n ong. E. 

 Jm/™ Greene. Mountain valleys: Colo. Svbmant.-Mont. Je-Au. 



69 E Drummondil Greene. Stem 2-4 dm. high strict; lower leaves ob- 

 lanceolate short-petioled, densely hirsute, entire or denticulate; upper leaves 



^n^l n.ar : head? 1-4, w th long peduncles; Involucres 6-7 mm. high 10-15 mm. 



ligules numerous 



E, gla- 



£r';E^rH^£:' -Hlflsidey -a^d mountain.: AlV.-Mont.-B.C.-Ya. 



kon. Plain. Je-Au. 



