890 CARDUACEAE 



Banks of streams and wet meadows: Mont. — Utah — Nev.— Ore. — B.C. /Sum- 

 mon/. — Mont. Jl-S. 



77. A. microlonchus Greene. Stem 5-8 dm. high, glabrous, or pubescent 

 in lines, branched; leaves narrowly lance-linear, 5-8 cm. long, entire, sessile, 

 thin, spreading and sometimes reflexed; involucres 7-8 mm. high, 10-15 mm. 

 broad; bracts linear, acute, glabrous, the outer slightly longer than the inner; 

 ligules pale violet or lilac, 7-8 mm. long. Valleys: B.C.- — Mont. Submont. Au. 



78. A. Kootenayi Nels. & Macbr. Stem villous, 8-10 dm. high, branched 

 above; leaves oblanceolate, acuminate, often sharply serrate, clasping with 

 auricled bases, 5-15 cm. long; disk fully 1 cm. high, 15-20 mm. broad; bracts 

 numerous, linear-subalate, attenuate, green, sparingly villous, longer than the 

 disk; ligules 10-12 mm. long, bluish purple. A.foliaceus Lyallii A. Gray. River 

 valleys: Ida. — Wash. Jl. 



79. A. Forwoodii S. Wats. Stem 4-6 dm. high, rough-hispid, strict; leaves 

 sessile, obovate, oblanceolate or lanceolate, narrowed to a broad auriculate base, 

 hirsute on the veins beneath, 5-10 cm. long, serrate, or the upper entire; inflores- 

 cence corymbose-paniculate; disk 10-12 mm. high, 12-15 mm. broad; bracts 

 linear, short-acuminate, equalling the disk; ligules 10-12 mm. long. Mountains: 

 S.D.— N.D. Submont. Au. 



80. A. amplus Lindl. Stem stout, about 1 m. high; leaves thin, the lower 

 oblanceolate, 1-1.5 dm. long; blades tapering below into a winged petiole, the 

 upper sessile, lanceolate, clasping; bracts glabrous, linear or narrowly linear-ob- 

 lanceolate, about equalling the disk; ligules 12-13 mm. long. Mountains: [Cana- 

 dian] "Rocky Mountains." Mont. 



81. A. diabolicus Piper. Stem erect, 5-10 dm. high, leafy; leaves thin, nar- 

 rowly oblanceolate, or the upper linear-lanceolate, entire or nearly so, the basal 

 10-15 cm. long, with winged petiole; stem-leaves 3-10 cm. long, sessile, some- 

 what clasping; disk about 1 cm. high, 10-12 mm. wide; bracts green, linear or 

 linear-lanceolate, barely equalhng the disk; ligules violet, 10-14 mm. long. A. 

 foliaceousCou\t.,mpaTt. Wet places: Ore. — Mont. — Alta. — B.C. Mont. Jl-Au. 



82. A. frondeus (A. Gray) Greene. Stem 3-10 dm. high; leaves thin, the 

 lower 1-2 dm. long, oblanceolate, entire, glabrous; middle stem-leaves oblance- 

 olate, with clasping auriculate bases, the upper lanceolate and also clasping; disk 

 about 1 cm. high, 15-20 mm. broad; bracts foliaceous, narrowly oblanceolate, 

 equalling or sometimes exceeding the disk; ligules about 1 cm. long, broad. 

 Mountains: Alta. — Colo. — Utah — B.C. Submont. — Subalp. Jl-S. 



83. A. Canbyi Vasey. Stem 3-6 dm. high; lower leaves petioled, 1-2 dm. 

 long; blades broadly oblanceolate; upper stem-leaves oblanceolate, sessile; disk 

 about 1 cm. high, 15-20 mm. broad; outer bracts scarcely equalling the disk; 

 ligules red-purple or rose-colored. Mountains: N.M. — Wyo. — Ida. Mont. — ■ 

 Subalp. Jl-Au. 



84. A. Cusickii A. Gray. Stem 3-6 dm. high; lower leaves with winged 

 petioles, 1-1.5 dm. long; blades oblanceolate, thin, entire or sparingly dentate; 

 upper stem-leaves lance-oblong, with auriculate-clasping bases; disk about 1 cm. 

 high and nearly 2 cm. broad; outer bracts exceeding the disk; ligules 10-14 mm. 

 long. Mountain meadows and along streams: Ore. — ^Ida. — B.C. Jl-S. 



85. A. Burkei (A. Gray) Howell. Stem 3-6 dm. high, glabrous below, vil- 

 lous above; lower leaves petioled; blades oblanceolate, glabrous, scabrous on the 

 margins; upper leaves elliptic or lanceolate, broadly clasping at the base; heads 

 few; disk l(Pl2 mm. high, 2-2.5 cm. broad; ligules 10-12 mm. long. A.foliaceus 

 Burkei A. Gray. A. majiisculus Greene, a luxuriant form with several heads. 

 Mountains: Wyo.— N.M.— Ariz.— Wash.— B.C. Mo7it. Jl. 



86. A. apricus (A. Gray) Rydb. Stem 1-2 dm. high, sparingly cinereous- 

 pubescent; leaves oblong or oblanceolate, 2-5 cm. long, glabrous, scabrous on 

 the margins; the uppermost clasjnng; disk about 1 cm. high, 12-15 mm. broad; 

 bracts spatulate or oblanceolate, acutish, glabrous, softly ciliate on the margins; 

 ligules purple. A. foUaceus apricus A. Gray. A. incertus A. Nels. (?) A. dis- 



