45. COMPOSITE. 165 



** Anthers with 2 bristles at their base, 

 t Receptacle without scales. Fr. cylindrical or tetragonal. 



(10.) .9. INULA. Heads radiant. Florets of the ray fern., 

 ligulate, rarely subtubular; of the disk perfect, tubular. 

 Anth. with 2 bristles at the base. Receptacle naked. Phyll. 

 imbricated in many rows. Pappus pilose, uniform, in 1 row. 



(11.) 10. PULICARIA. Phyll. laxly imbricated in few rows. 

 Pappus in 2 rows, outer short cuplike membranous toothed, 

 inner pilose. Otherwise like Inula. 



ft Receptacle without scales or scaly only at the margin. Fr. 

 cylindrical or compressed. 



(12.) 20. GNAPHALIUM. Outer florets fern., central perfect, 

 all tubular. Pappus capillary. Receptacle flat, naked. In- 

 volucre hemispherical, imbricated ; phyll. equalling the 

 florets but not intermixed with them. Cor. of the fern, 

 florets often obsolete. 



(13.) 19. FILAGO. Outer florets fern., filiform, in several 

 rows, outermost ones intermixed with the inner phyllaries 

 or paleae; central florets few, perfect, tubular. Pappus 

 capillary. Receptacle conical, scaly at the margin. Invo- 

 lucre subconical, imbricated ; phyll. lanceolate, longer than 

 the florets. 



(14.) 21. ANTENNARIA. Heads subdicecious. Male florets 

 tubular, style almost simple, pappus clavate. Fern, florets 

 filiform, pappus capillary. Receptacle convex. Involucre 

 hemispherical, imbricated ; phyll. coloured at the end. 



B. Pappus 0, or membranous. 



f Receptacle without scales. Heads heterogamous, radiant. 

 Fl. of the ray fern., ligulate, in 1 row ; of the disk herm., 

 tubular 



(15.) 6. BELLIS. Phyll. in 2 rows equal obtuse. Receptacle 

 conical. Fr. compressed. Pappus 0. 



(16.) 15. CHRYSANTHEMUM. Involucre hemispherical. Fr. 

 terete, without wings, or slightly angular and somewhat 

 winged. Pappus or of 3 minute teeth. 



(17.) 16. MATRICARIA. Involucre conical, hemispherical or 

 nearly flat. Fr. angular, not winged. Pappus 0, or a slight 

 membranous border. 



