14 THE FLORA OF THE ALPS 



meadows. A. setacea, W. K., with linear leaf-segments, 

 is a mountain variety of Millefolium. The remaining 

 species are alpine. 



A. Ray -flowers 6-20 (usually 10), as long as, or longer 

 than, the hemispherical involucre {Ptarmica, DC). 



a. Plant very tomentose or silky : — A . Clavence^ L. ; 

 leaves silky, elliptic-cuneate in outline, pinnatifid, with 

 elliptic, blunt, entire or 2-3-toothed segments, stem erect, 

 3-6 in. ; alpine pastures, common. A. nana, L. (PI. 62); 

 leaves tomentose, pectinate-pinnatifid, segments linear- 

 lanceolate, often bifid, stem erect, 2-6 in ; very high, rare ; 

 Switzerland, Tirol, Carinthia, Piedmont, Dauphiny. 



b. Plant not tomentose or silky : — A. alpina, L. ; leaves 

 pinnatifid-dentate ; very rare; St. Gothard, Aosta. A. 

 macrophylla, L. ; corymb very compound, stem i-ij ft., 

 leaves large, much divided ; moist ; Switzerland, Jura, 

 Carinthia, local, A. glabrata, Koch; corymbs simple, 

 stem i-io in., leaves cuneate-elliptic in outline, pinnate, 

 with blunt segments; high; Carinthia, Salzburg. A. 

 moschata, L. ; stem about 4 in., leaves pectinate-pinna- 

 tifid, with acute entire lobes, dotted; high, frequent. A. 

 atrata, L. ; stem 3-10 in., leaves pinnatifid, with pinna- 

 tifid mucronate segments, involucral bracts with a broad 

 black margin ; damp pastures, frequent. A . Clusiana, 

 Tausch. ; resembling the last, but leaves bipinnate, with 

 acute toothed segments; damp pastures; Styria, Carin- 

 thia, Carniola, Salzburg. A. pyrenaica, Sibth. ; plant 

 pubescent, stem 8-15 in., leaves pale green, strongly 

 dotted, lanceolate, attenuate, dentate ; Pyrenees. A. 

 herba-rota, All., stem 6-Z in., leaves pale green, strongly 

 dotted, stem-leaves simple, oblong-cuneate, dentate, plant 

 aromatic; Dauphiny, Pyrenees. 



