COMPOSITE 181 



Centaurea nervosa Willd. 



Resembling the last, but more robust and hispid, and of a grey- 

 green colour. The leaves have prominent nerves on the under side, 

 and are irregularly toothed, the stem-leaves being broader and 

 truncate or auricled at the base. 



High pastures up to 7700 feet or 2350 metres. July to September. 



Distribution. Eastern, Central, and Western Alps ; local. 



This occurs in Switzerland, and is considered by the modern 

 Swiss botanists a sub-species of C. uniflora, which does not occur 

 in their country. 



Centaurea Scabiosa L. 



Stems about 2 feet high, much branched at the base. Leaves 

 doubly pinnatifid with more or less lanceolate lobes, often coarsely 

 toothed or lobed. Flower-heads large, with purple florets, the 

 outer ones neuter. Involucral bracts broad, bordered with a black 

 adpressed fringe. Pappus of stiff hairs or bristles, nearly as long 

 as the achene. 



Pastures and roadsides from the plains to the Alps. July, 

 August. 



Distribution. Europe and Russian Asia, but not in the extreme 

 north. British Isles. 



Centaurea Rhaponticum L. (Rhaponticum scariosum Lamk.). 



A tall, robust and handsome plant, with erect, simple stem and 

 large leaves which are grey-white cotton-felted beneath, entire ; 

 the lower ones broadly lanceolate, subcordate, petioled, usually 

 toothed at the margin. Flower-heads large, solitary, terminal. 

 Outer involucral bracts broadly ovate, scarious, laciniate or strongly 

 ciliate at the margins, slightly*woolly. Flowers} purple.^ Aj? very 

 distinct plant. 



Rocky mountain-sides from 4000-6000 feet ; scarce. July. 



Distribution. Eastern, Central, and Western Alps, from Carniola 

 and Tyrol to the Maritime Alps. 



In the Valais this handsome species can be seen in such places as 

 near Lac Champex and Bourg St. Pierre. 



SUB-FAMILY : LIGULIFLOR^ 



APOSERIS Necker 

 Aposeris fcetida Less. 



Stem erect, leafless, glabrous like the leaves, bearing a single 

 capitulum, pendent before flowering. Leaves wedge-shaped in 

 outline, forming a sort of rosette, runcinate-pinnatind, lateral 

 segments nearly triangular or lozenge-shaped, terminal segment 

 broad, 3-lobed. Flowers lemon-yellow, twice as long as the involu- 

 cre. Fcetid, Involucre green, herbaceous, with an exterior in- 



