COMPOSITA 37 
P. purpurea, L.; stem much branched, glabrous, leaves 
cordate-amplexicaul, bluish-green beneath; mountain 
woods, common. 
63. CHONDRILLA, L. 
Flowers yellow ; capitules of only 7-12 flowers in two 
rows; involucral bracts few, in one row, surrounded by 
small scales; pappus-hairs simple, white; achene beaked, 
with five spine-like teeth. 
C. juncea, L.; stem 2-3 ft., capitules small, racemose, 
radical leaves runcinate, stem-leaves linear; dry hills; 
Western Switzerland, Pyrenees. C. prenanthoides, Vill. ; 
stem 8-12 in., capitules larger, corymbose, radical leaves 
obovate-lanceolate, toothed, upper leaves linear; beds of 
mountain streams; Grisons, St. Gallen, Tirol, Salzburg, 
Carinthia. 
O4- LACTUCA,. ‘L. 
Flowers yellow or blue; capitules generally small, 
few-flowered, corymbose; involucral bracts in several 
rows; pappus of many soft slender feathery hairs ; fruit 
beaked. 
A. Flowers blue :—L. perennis, L.; capitules large, on 
long stalks, involucral bracts cordate, lower leaves pin- 
natifid, upper lanceolate, stem very thick (4-1 in. diam.) ; 
stony slopes ; Switzerland, Jura, Pyrenees, local. ZL. alfz- 
nus, Benth. (Sonchus alpinus, L., Mulgedium alpinum, 
Less.) ; stem 2-4 ft., purple, glandular-hairy, capitules 
large (1 in. diam.), racemose, leaves lyrate with a very 
large terminal segment; high, not uncommon; Switzerland, 
Jura, Vosges, Pyrenees. ZL. Plumieri, G. and G. (Sonchus 
Plumieri, L.); involucral bracts cordate, lower leaves 
