COMPOSITE 13 



C. Receptacle flat or somewhat concave ; stem leafy : — 

 L. heterophylluni, DC. ; stem-leaves nearly regularly 

 toothed, lower leaves narrowed into a leaf-stalk, border 

 of involucral bracts narrow ; Southern Switzerland, Tirol, 

 Carinthia, rare. L. atrattcm, DC. ; resembling vulgare^ 

 but dwarf, achenes of the ray with a membranous crest; 

 alpine pastures, local. L. Gaudini^ Dal. Tor. ; resembling 

 vulgarCy but lower leaves nearly entire ; alpine pastures, 

 frequent. L. coro?iopifolium, Vill. ; leaves fleshy, brittle, 

 glabrous, deeply incised, radical leaves elliptical; high; 

 Switzerland, Piedmont, Dauphiny, Pyrenees. L, cera- 

 tophylloideSy All. ; leaves fleshy, brittle, glabrous, shal- 

 lowly pinnatifid, radical leaves wedge-shaped ; very rare ; 

 Switzerland (Linderskopf), Dauphiny. L. maximum^ 

 DC. ; capitule solitary, very large, stem up to 2 ft., 

 ray-achenes more or less crested; pastures; Dauphiny, 

 Pyrenees. 



25. Chrysanthemum, L. 



Resembling Leucanthemum^ but ray-flowers yellow; 

 achenes of ray-flowers triquetrous. 



C. segetum, L., Corn-Marigold; cultivated fields (not 

 in Switzerland). 



• 26. Achillea, L. 



Capitules small, in dense corymbs; ray-flowers few, 

 ligulate, short, white, yellow, or red ; disk-flowers tubu- 

 lar, bisexual; receptacle scaly; pappus o; leaves very 

 deeply divided; often densely caespitose. The alpine 

 species appear often to hybridise. 



A. Millefolium, L., Milfoil, Yarrow, is very common in 

 grassy places ; and A. Ptarmicay L., Sneezewort, in damp 



