120 
FLORA OF MOUNT DESERT. 
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ERECHTITES, Raf. Fikkweed. 
E. hieracifolia (L.), Raf. 
Wood clearings, especially in recently burned ground; 
common. 
ARCTIUM, L. Burdock. 
A. Lappa, L. 
Common in waste places, especially about old dwellings. 
Naturalized from Europe. 4 ; \PjUii4,' ^ ^ ^ 
emeus, L. Thistle. 
C. LANCEOLATUS (L.), Hoffm. Common Thistle. '^£ 4 ^ 
Pastures, fields and roadsides; common. Naturalized from C --» 
Europe. 
C. AEVENSIS (L.), Hoffm. Canada Thistle, ^ ^ "T^ 
Pastures, fields, and roadsides; too common. Naturalized ,ih, 
from Europe, ^ ^ 
Forma albieloeus. 
Flowers pure white. Southwest Harbor (Rand) ; — Seal Har- H- 
bor (Wm. C. Lane). 
CENTAUREA, L. Star Thistle. 
C. CyANUS, L. Bluebottle. Bachelor’s Button. 
Occasionally escaped from cultivation to roadsides and waste 
places. Southwest Harbor, etc. (Rand, Annie S. Downs), ^di ^ 
ARNOSERIS, Gsertn. Lamb’s Succory. 
A small, annual, scapigerous herb; juice milky; leaves all 
radical; heads few, small; peduncles clavate, fistular; involu- 
cral bracts in one series, many, after flowering arching over the 
fruit ; receptacle flat, naked, pitted ; corollas all ligulate, 
yellow; anther cells not tailed; upper part,of style and its 
short obtuse arms hairy ; fruit obpyramidal, furrowed and 
ribbed, not beaked, crowned by a coriaceous angular ring. 
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