CHICORY FAMILY 1033 



24. A. carnea Rydb. Leaves oblanceolate, entire, or denticulate, 8-15 cm. 

 long, glabrous, dark green; scape 1-2 dm. high, villous under the head; involucres 

 turbinate, about 15 mm. high, villous; outer bracts oblong, obtuse, about equal- 

 ling the inner linear-lanceolate, acute ones, somewhat purple-spotted; flowers 

 orange, turning pink and purple. Wet places: Alta. — Mont. — B.C. Submont. 

 —Mont. Jl-Au. 



25. A. aurantiaca (Hook.) Greene. Leaves oblanceolate, entire or dentate 

 or lobed with reflexed or salient lobes; scape 4-6 dm. high, villous under the head; 

 involucres tmbinate-campanulate, 1.5-20 mm. high; inner bracts linear-lanceo- 

 late and acute; flowers orange, turning purpUsh. T. aurantiacum Hook. Mead- 

 ows and banks: Alta. — Colo. — Utah — B.C. Submont. — Alp. JI-Au. 



26. A. arizonica Greene. Leaves linear or linear-oblanceolate, entire, run- 

 cinate-toothed, or somewhat lobed, 1-1.5 dm. long, somewhat glaucous; scape 

 2.5-4 dm. high, villous under the head; involucres turbinate, 2-2.5 cm. high, 

 about 1.5 cm. broad; bracts rather few, in three series, lanceolate to narrowly 

 linear-lanceolate, nearly glabrous and with a purple midvein; flo^\■ers light yellow, 

 turning rose-colored. Mountains: N.M. — Colo. — Utah — Ariz. Submont. — Mont. 

 Je-Au. 



27. A. leptocarpa Osterhout. Leaves linear or linear-oblanceolate, entire to 

 runcinate-pinnatifld, 5-8 cm. long, glabrous or somewhat villous, somewhat glau- 

 cous; scape 1-1.5 cm. high, villous under the heads; involucres turbinate, 15-20 

 mm. high; bracts in 3 series, with purple midribs, the outermost lanceolate, acute, 

 the inner linear-lanceolate; flowers hght yellow, turning pinkish. A. caudata 

 Greene. Hills and plains: Wyo. — Colo. — Utah. Submont. — Mont. Je. 



28. A. rostrata Rj-db. Leaves narrowly linear-lanceolate, about 2 dm. 

 long, usually more or less laciniate, with linear lobes, glabrous and glaucous; 

 scape 2-6 dm. high, more or less villous under the head; involucre fully 3 cm. 

 high; inner bracts elongate-linear or linear-lanceolate; corolla orange or purple. 

 Mountains: Colo. Submont. — Mont. Je-Au. 



29. A. tenuifolia (A. Gray) Rydb. Leaves linear-oblanceolate or Unear, 

 laciniate-dentate or pinnatifid, with narrow divisions, slightly villous or glabrous, 

 caudate-acuminate; scape slender, 3-5 dm. long, glabrous, slightly villous under 

 the heads; involucres campanulate or nearly hemispheric, 1.5-25 mm. high; bracts 

 in about 4 series, those of the two outer ovate-acmninate ; inner bracts linear or 

 linear-lanceolate. T. grandiflorum tenuifolium A. Gray. T. laciniatum A. Gray, 

 not Stylopappus Inciniatus Nutt. Dry places: Ore. — Ida. — B.C. Son. My-Jl. 



30. A. obtusifolia (Suksd.) Rydb. Leaves pinnatifid, or rarely entire, 

 naore or less villous on the midrib and vems beneath; scape stout, 3-6 dm. high, 

 villous under the heads; involucres campanulate, 3-4 cm. high; bracts in 4 series, 

 the outer two series short, ovate or oval, decidedly villous, acute or short-acumin- 

 ate; inner bracts glabrous, narrowly linear-lanceolate. T. grandiflorum obtusi- 

 Jolium Suksd. Valleys: Wash. — Ida. — Calif. Son. Mj^-Jl. 



31. A. grandiflora (Xutt.) Greene. Leaves 1-2 dm. long, oblanceolate, at- 

 tenuate at each end, sinuate-dentate to laciniate-pinnatifid, with acute divisions 

 more or less pubescent, at least on the midrib; scape 2-5 dm. high; involucres 

 2.5-3 cm. high and as wide; bracts very unequal, the outer ovate or lanceolate, 

 lanate or tomentose, the inner hnear and glabrate. Stylopappus grandiflorus 

 Nutt. T. grandiflorum A. Gray. Plains and hillsides: B.C. — Ida. — ^CaHf. 

 Son. Ap-Au. 



32. A. retrorsa (Benth.) Greene. Leaves pinnatifid, decidedly villous, with 

 linear, salient or retrorse lobes, caudate-elongate; scape 3-8 dm. high, more or 

 less villous; involucres campanulate, 3-4 cm. high; bracts in about 4 series, more 

 or less viUous, the outer ovate, elliptic, or oval, acute; inner bracts narrowly linear- 

 lanceolate; flowers yellow. T. retrorsiim A. Gray. Pine woods and grassy slopes: 

 Calif. — sw Ida. — Ore. Son. — Subrjiont. Ap-Jl. 



33. A. heterophylla (Nutt.) Greene. Leaves linear-oblanceolate or linear, 

 entire or dentate, or somewhat pinnatifid, with lanceolate divisions, more or less 

 hirsute; scapes several, 1-2.5 dm. high, slender; involucres more or less hirsute, 



