978 CARDUACEAE 



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

 tinged 3' A. alpina. 

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



XI. PEDUNCULATAE. 



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



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



XII. LESSINGIANAE. 



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 

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

 ampliate; achenes hirsute or glabrate; pappus brownish, subplumose. A. eradiata 

 (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, saliently 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. abortiva Greene, a small-leaved 

 form. Wooded hills: Alta. Colo. Calif. B.C. Submont. Subalp. Je-Au. 



6. 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 slightly villous. A . parvifolia Greene. 

 A. Evermannii Greene. Mountains: Alta. Colo. Utah B.C. Mont. Sub- 

 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 slightly ciliolate; ligules orange, about 1 

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

 Mountains: Mont. Mont. Au. 



i 7 J f ' ^ ra ? ilis R y db - 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 smaUer; heads usually 1-5; involucres turbinate, about 1 cm. 

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

 kwtiicina Greene. A. columbiana A. Nels. A. multiftora Greene, with more 

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

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



