444 207. Leucantha. 39. COMPOSITE, B. Pl. ex. cal 
ovate; pappus bristlelike, shorter than the akenium ; rays 
rough. — Stem branched; upper leaves decurrent; calat hides 
solitary, terminal; corollce golden yellow. 
Leucantha cyanifolia. Bluebottle yellow-thistle. 
Leaves decurrent, woolly, lanceolate, not cut ; root-leaves 
lyrate ; calathide solitary ; spines of the pericliee straight. 
Carduus stellatus luteus foliis cyani, Rati Syn. 196,2. 
Carduus solstitialis, Ger. em. 1166, 2. 
Carduus solstitialis Dodonaei, Park. 989. 
Centaurea solstitialis, Lin. S. P. 1197. 
Saint Burnaby' s thistle. 
Fields and hedges ; annual ; July and August. 
Stem 2 feet high, branched, many-flowered ; root-leaves 
denticulated. 
C. CorymbifertE. Calathides flosculous, or radiated; 
clinanthus scarcely fleshy, or not at all; style not jointed at 
the base of the lobes. 
a. Pappus 0 ; clinanthus naked. 
Calathides flosculous Artemisia. 212. 
b. Pappus 0 ; clinanthus naked ; calathides radiated. 
Rays white; pericline-scales equal, in 
two series Bellis. 220. 
Rays white; pericline flattish; scales 
imbricate, herbaceous Chamomilla. 219. 
Rays white; pericline hemispherical; 
scales imbricate, coriaceous Leucanthemum. 216. 
Rays yellow ; pericline hemispherical ; 
scales imbricate; akenia uniform Chrysanthemum. 215. 
Rays yellow ; pericline-scales in one 
Series ; akenia difform, boatshape Calendula. 208. 
c. Pappus 0; clinanthus villous or chaffy. 
Calathides flosculous ; clinanthus villous 
Absinthium. 213. 
Calath. flosculous ; clinanthus chaffy Diotis. 214. 
Calath. radiated ; clinanthus naked below ; 
chaffy above ; chaffs linear Maruta. 222. 
Calath . radiated; rays ovate, short; 
dinanthus chaffy ; chaffs linear 
Achillea. 224. 
