978 CARDUACEAE 



Leaves and stem villous when young; leaves mostly acuminate: bracts purple- 

 tinged. 36. A. alpina. 

 Leaves densely villous-tomentose. 37. A. tonicnlosa. 



XI. Pedunculatae. 



Stem with tufts of brown wool at the base. 38. A. pedunculata. 



Stem without tufts of wool at the base. 39. A. fulgens. 



XII. Lessingian.\e. 



One species. 40. A. Louiseana. 



1. A. Parryi A. Gray. Stem 2-6 dm. high, somewhat hirsute-villous below, 

 glandular above; lower leaves petioled; blades ovate or ovate-oblong, usually 

 denticulate; upper leaves sessile, narrowly lanceolate, smaller and entire; heads 

 3-9; involucres broadly turbinate, 12-15 mm. high, glandular-hirsute; bracts 

 Unear, attenuate; ligules usually none, but the marginal flowers sometimes 

 ampjiate; achenes hirsute or glabrate; pappus brownish, subplumose. A. cradiala 

 (A. Gray) Heller. Mountains: Alta.—N.M.— Utah— Ore.— B.C. Mont.~Alp. 

 Jl-Au. 



2. A. paniculata A. Nels. Stem 4-7 dm. high, glandular and viscid-vil- 

 lous; blades of the basal leaves broadly ovate, subcordate at the base, 6-10 cm. 

 long, viscid-villous on both sides; stem-leaves 3-4 pairs, the lower petioled, the 

 upper sessile; blades ovate, denticulate; heads paniculate-cymose; involucres 

 nearly hemispheric, 12-15 mm. high; bracts linear-lanceolate, acute or acuminate; 

 achenes hirsutulous. Moist woods: Mont. — Wyo. — Utah. Au. 



3. A. grandifolia Greene. Stem 3-4 dm. high, sparingly villous-ciliate or 

 glabrous; basal leaf -blades ovate-cordate, 5-7 cm. long, toothed; stem-leaves 

 about 3 pairs, the lowest pair long-petioled ; blades cordate, with a narrow sinus, 

 10-15 cm. long, saUently toothed with triangular teeth, puberulent above, gla- 

 brous or nearly so beneath; upper stem-leaves subsessile, oval or ovate; involucres 

 nearly hemispheric, about 15 mm. high; bracts oblanceolate, short-acuminate. 

 Perhaps a large-leaved form of A. cordifolia. Mountain sides: Mont. — B.C. 

 Mont. Jl. 



4. A. cordifolia Hook. Stem 2-6 dm. high, somewhat viscid; basal leaf- 

 blades broadly cordate, usually coarsely toothed, 3-10 cm. long, puberulent, 

 and viscid-villous on the veins; stem-leaves 2-4 pairs, all except the uppermost 

 petioled and cordate or rarely ovate; involucres campanulate-turbinate, 15-18 

 mm. high; bracts oblanceolate, acuminate. A. ahortiva Greene, a small-leaved 

 form. Wooded hills: Alta. — Colo. — Cahf. — B.C. Siibmont. — Suhalp. Je-Au. 



5. A. pumila Rydb. Stem 1-2, rarely 3 dm. high, viscid-villous; basal 

 leaf-blades firm, ovate, rarely subcordate, entire or few-toothed, 2-5 cm. long, 

 puberulent; stem-leaves 1-3 pairs, short-petioled or the upper sessile; involucres 

 turbinate, 10-12 mm. high, puberulent and shghtly villous. A. parvifolia Greene. 

 A. Evermannii Greene. Moimtains: Alta. — Colo. — Utah — B.C. Mont. — Suh- 

 alp. Je-Au. 



6. A. granulifera Rydb. Stem about 3 dm. high, glandular-granuliferous; 

 basal leaves petioled, with probably cordate blades, fallen at the time of flower- 

 ing; lower stem-leaves obovate, dentate, about 5 cm. long, glandular-granulifer- 

 ous, thin, with strong ribs; upper stem-leaves ovate or cordate, sessile; heads 3-5; 

 involucre about 12 mm. high and 2 cm. broad; bracts oblanceolate, abruptly 

 acuminate, glandular-granuliferous and shghtly ciliolate; Ugules orange, about 1 

 cm. broad; achenes glandular-pub erulent, striate; pappus dirty white, barbellate. 

 Moimtains: Mont. Mont. An. 



7. A. gracilis Rydb. Stem slender, 1-3 dm. high, glabrous; inflorescence 

 glandular-pruinose; basal leaf -blades broadly ovate, dentate, 3-ribbed, 2-4 cm. 

 long, glabrous or nearly so; stem-leaves 2 or 3 pairs, the lower short-petioled, the 

 upper sessile and smaller; heads usually 1-5; involucres turbinate, about 1 cm. 

 high; bracts oblanceolate, acuminate; achenes sparingly glandular-pruinose. A. 

 lactucina Greene. A. coliwibiana A. Nels. A. mulliflora Greene, with more 

 numerous heads. (?) A. ovalifolia Greene. Mountain meadows: Alta. — Wyo. 

 — Wash. — B.C. Submont. — Mont. Je-Au. 



