24 THE FLORA OF THE ALPS 



A. Involucral bracts lacerated, or with a broad mem- 

 branous appendage ; leaves tomentose (Rhaponticuin^ 

 DC.) : — S. Rhaponticujn, DC. {R. scariosuifiy Lam.) ; capi- 

 tule large, solitary, appendages of bracts ciliate, stem \\- 

 2 ft., leafy below, naked above ; Valais, Dauphiny, rare. 

 5. keleniifolta, G. and G. ; capitules solitary or several, 

 stem 3-4 ft., leafy throughout, involucral appendages not 

 ciliate, stem-leaves often lyrate ; high, local. 6". cynaroi- 

 des, DC. ; capitules very large, usually solitary, involucral 

 scales lacerated, stem about 3 ft., leafy ; Pyrenees. 



B. Involucral leaves not appendaged; leaves nearly 

 glabrous : — vS. tinctoria^ L., Saw- Wort ; capitules small, 

 numerous, oval, often unisexual, involucral bracts rigid, 

 strongly ciliate, stem-leaves usually lyrate - pinnatifid ; 

 thickets, frequent. S. Vulpiiy Fisch., alpina (van), G. and 

 G. ; and monticola^ Bor., are mountain forms of tinctoriuy 

 often with only a single capitule. vS. nudicaulis, DC. ; 

 capitule large (up to i in.), solitary, bisexual, upper part 

 of stem leafless, radical and uppermost leaves entire, 

 intermediate serrate ; Saleve, Piedmont, Dauphiny. 6". 

 heterophyllaj Desf. ; resembling the last, but stem leafy 

 throughout, lower stem-leaves pinnatifid at the base; 

 Dauphiny. 



40. Crupina, Cass. 



Resembling Serratulay but outer flowers of capitule 

 sterile; inner row of pappus-hairs reduced to scales. 

 Not alpine. 



C. vulgaris^ Cass. ; flowers 3-5 in a capitule, purple, 

 stem-leaves pinnatifid, with linear toothed segments, 

 stony places ; Western Switzerland. 



