8o 



Compositae. 



ORDER 40, — Compositse. 



Calyx gamosepalous superior united with the ovary, its limb wanting or 

 consisting of bristles or hairs (pappus). Corolla gamopetalous epigynous with 

 5 teeth, either ligulate or tubular. Stamens 5 epipetalous. Anthers united 

 (syngenesious). Ovary i -celled with a single erect ovule. Style i. Stigmas 

 2. P'ruit an achene tapering to a beak or without one. Flowere collected in 

 heads (forming compound flowers) upon a common receptacle surrounded by 

 an involucre. Fig. p. 77. 



330 

 331 



335 



338 



340 



336 

 337 



341 



342 



Florets all ligulate, 

 Florets some tubular, 



330 Pappus absent, 



330 Pappus present, 332 

 33 1 Florets all tubular, style swollen below its branches, 

 331 Style not swollen below its branches, 



332 Pappus of scales, ..... 



332 Pappus of hairs, 

 333 Leaves spiny or prickly, 

 333 Leaves not spiny, 



334 Pappus none, 



334 Pappus present, 

 335 Pappus of central florets plumose, 

 335 Pappus pilose, 



336 All the involucral bracts spinous, 343 



336 Outer bracts only spinous, inner ones 

 coloured spreading, .... 

 337 Scales of involucre hooked at the point, 

 337 Scales of involucre straight at the point, 344 



338 Receptacle with scales, 339 



338 Receptacle without scales, 345 



339 Receptacle convex, 



339 Receptacle flat, 



340 Pappus of 2 — 5 bristles, . 



340 Pappus of numerous hairs, 346 

 341 Receptacle with chaffy scales, .... 

 341 Receptacle without scales, 347 



342 Achenes much compressed, 348 



342 Achenes nearly terete, 351 



Lapsana X. 



333 

 334 

 Cichorium XL 



Carlina XVI. 

 Arctium XII. 



Anthemis XXVIII. 

 Achillea XXXIII. 

 . Bidens XVIII. 



. Hypochseris III. 



