CLASSES, &c. AND GENERA ARRANGED, cxxt 



Apa'rgia, Hawk-Ut. Cal. double ; inner one tiled. Recept^ 

 naked, pitted. Seed-doivn feathery, stalkless, unequal and 

 various. — Page 224. 

 PiCRis, Ox-tongue. Cal. double ; inner one equal ; outer one lax. 

 Recept, naked. Seed-down feathery. Seeds transversely fur- 

 rowed. — Page 221. 

 Tragopo'gon, Goat' s-heard. Cal. simple, scales several, equal, in 



two rows. Recept. naked, Seed-doivn stalked, feathery. " Fruit 



slightly furrowed lengthways." — Page 220. 

 LEo'NTODOy, Dandelion. Cal. tiled, double ; outer scales lax. 



Recept. naked. Seed-down stalked, simple.— Page 223. 

 Lactu'ca, Lettuce. Cal. tiled, cylindric, simple ; scales wath a 



membranous margin. Recept. naked. Seed-doivn stalked, 



naked.— Page 222. 

 Prexanthes, TVall-lettuce . Cal. double. Florets in one row, 



(few.) Recept. naked. Seed-down nearly stalkless, simple. — 



Page 223. 

 SoNCHUS, Sow -thistle. Cal. simple, tiled, swollen at the base, 



Recept. naked. Seed-down stalkless, simple. — Page 221. 

 Lapsa'na, Nipple-wort. Cal. double ; inner one of equal chan- 

 nelled scales. Seed-doivn none. Recept. naked. Fruit quickly 



falling off, (deciduous.) — Page 227. 

 ** All the florets tubular, mostly spreading in the limh, forming «« 



hemispheric head. Capitati (Jieaded.) CinarocephalcB of Jussieuy 



Thistle-tribe. 

 Ls. alternate. FL mostly red, or purple. 

 Carli'na, Carline-thistle. Cal. swollen, tiled ; outer scales thorny 



(spinous ;) inner ones coloured, polished, spreading, membranous, 



radiant. Recept. chaffy. Seed-down feathery. — Page 233. 

 'Arctium, Burdock. Cal. round, (globose,) each calyx-scale with 



a hook curved inwards, at the end. — Page 228. 

 Ca'rduus, Thistle. Cal. swollen, tiled ; scales thorny, (spinous.) 



Recept. hairy. Seed-down falhng off, (deciduous,) roughish. — 



—Page 229. 

 Cnicus, Plume-thistle. Cal. swollen, tiled ; scales, thorny, (spinous.) 



Recept. hairy. Seed-down falling off, (deciduous,) feathery. — 



Page 231. 

 Onopordum, Cotton-thistle. Cal. swollen ; scales thorny, spread- 

 ing. Recept. honey-combed, (cellular.) Fruit four cornered. 



—Page 231. 



