890 CARDUACEAE 



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

 mouL — Mont. Jl-S. 



microlonchus Greene. Stem 5-8 dm 



5-8 



thm, spreadmg and sometimes reflexed; mvolucres 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. SubmonL Au. 



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

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

 auricled bases, 6-15 cm, long; disk fully 1 cm. high, 15-20 mm. broad; bracts 

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

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

 valleys; Ida. — Wash. Jl. 



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

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

 hu-sute 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-acummate, equalling the disk; ligules 10-12 mm. long. Mountains: 

 b.D. — N.D, Submonl. 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 sessde, lanceolate, clasping; bracts glabrous, linear or narrowly linear-ob- 

 lanceolate, about equallmg 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 claspmg; disk about 1 cm. high, 10-12 mm. wide; bracts green, linear or 

 hncar-lanceolate, barely equalling the disk; ligules violet, 10-14 mm long A 

 /o/iaceousCoult.,inpart. Wet places: Ore.— Mont.— Alta.— B.C. Mont. ji-Au. 



1 ^^\^A •^^°^,deus (A. Gray) Greene. Stem 3-10 dm. high; leaves thin, the 

 lower I72 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. 

 Moxmtains: 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; 

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

 buoal-p. Jl-Au. 



..8f. 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 10-12 mm high, 2-2 5 cna. broad; ligules 10-12 mm. long. A.foliaceus 

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

 Mountains: Wyo.— N.IM.— Ariz.- Wash.— B.C. Mont. 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 clasping; disk about 1 cm. high, 12-15 mm. broad; 

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

 ligules purple. A. folmceus a-pricus A. GtslY- -4. mcer/us A. Nels. {1) A dis- 



