178 45. COMPOSITiE. 



tttt Receptacle' scaly throughout. Pappus 0. ■ 



(21.) 13. Anthkmis. Head's radiant. M. of the ray fern., 



. or meiiter, ligulate, in 1 rowj of the disk perfect, tuhtilar. 



' . Receptacle convex or conical.' Phyll. imbricate, of few 



rows. Fr. terete, or bluntly tetragdnal, without pappus, 



but with a more or less promiaentmargin. 



[Anacyclus. Fr. compressed, winged at the' edges. Other- 

 wise like Anthemis.'\ 



(22.) 12. AcHiLLi^A. Heads radiant,, Fl. of the rayjfem., 

 ligulate, short; of the disk perfect, tubular; ,iM5«,^3Za«e- 

 compressed, ^-winged. Receptacle nearly flat, afterwards 

 often narrow and lengthbnedl Inv. ovate or oblong. Phyll. 

 imbricate.- ■ Fr. compressed, without pappus. 



(23.) 16. DiOTis. , Heads discoidal. Fl. perfect,, tubular ; 

 tube compressed, with 2 auricles at the base. Receptacle 

 convex, with conpave downy-topped.scales. Inv. bellshaped. 

 Phyll. imbricate. Fr. compressed, crowned with the per- 

 sisieiit auricled tube, of the cor. y'pa.^T^xia Q. [ 



C. Pcqjpit-s ofi — 5 stiff bristles^ Receptacle scaly throughout, 



(24.) ll. BiDENs. Heads discoidal, sometimes radiant, Fl. 

 (of the ray neuter, ligulate;) of the disk herra,, tubular. 

 Receptacle flat. Phyll' in 2 rows, outer row' spreading. 

 Branches of the style surmounted by short cones. Fr. 

 compressed, angular, rough at the edges ; the angles ending 

 in 2 — 5 stiff hispid bristles. 



Suborder 11. CYNAROCEPHALE^. . 



Flowers all tubular., Stjde swollen belpw its branches,— 

 involucre imbricate in all pur genera. ' ' ' ' 



a. Anthers with 2 bristles at their base. 



25. Saussueea. Fl. all perfect. Phyll. unarmed. Recep- 

 tacle scaly. Pappus in 2 rows, outefii of short rough bristles, 

 inner feathery. 



26. Caelina. , Fl, ^11 perfect. Outer phj'U. Ifix, leaflike, sp- 

 inous ; inner linear, membranous, coloured and resembling 

 a ray. Receptacle with cleft scales. Pappus in 1 roic 

 branched and feathery, united into a 7'ing below. 



27. AncTiuM. Involucre globose. Phyll. ending in hooked 

 points. Receptacle • flait, with rigid subulate scales. Fr. 

 compressed, oblong. Pappus short, hairlilvc, distinct. 



