Flora of the Malayan Peninsula. 



23 



Heads 1- or few-flowerecl, crowded into dense clusters 



resembling single heads ; pappus chaffy 



Anthers sub-entire at the base, either truncate or appendicu- 



late at the apex ; leaves opposite at any rate below 



{Ewpatorieic) : — 



Anthers truncate at the apex . . . . ... 



Anthers appendiculate at the apex : — 



Pappus paleaceous, receptacle sometimes paleaceous . . 

 Pappus of slender hairs ; receptacle always naked ; 

 bracts of involucre 4 with sometimes a small outer 

 one ; scandent 

 Florets, if homogamous and tubular, yellow ; if heterogamous, 

 at least those of the disk yellow ; or if none of the florets 

 yellow {Emilia) then with the bracts of the involucre 1-seriate 

 Anthers appendiculate at the apex (Asteroideee) : — 

 Receptacle naked, smooth, or pitted ; sometimes, when 

 pitted, the edge of the pit fimbriate : — 

 Bracts of involucre in two rows : — 



Anthers sub-entire at the base ; florets all tubular, 

 those of the disk purple, of the ray filiform, yellowish 

 or white ; pappus none or of 2 bristles ; heads small 

 in lax panicled cymes, bracts of involucre in two 

 series ; erect herbs 

 Bracts of the involucre many-seriate, leaves alter- 

 nate : — 

 Anthers obtuse and entire at the base ; florets of disk 

 tubular with wide limb ; those of the ray filiform- 

 tubular or tubular only at the base, expanding into 

 small yellowish ligules ; pappus copious and silky ; 

 heads in dense corymbose panicles ; climbers 

 Anthers cleft at the base ; style-arms of hermaphro- 

 . dite flower filiform, linear, or obtuse, or those of the 

 sterile flowers undivided (Innloidea) : — 

 Flower-heads medium-sized ; separate, solitary, or 

 in corymbose or paniculate cymes, not in globose 

 clusters, if clustered the cypselas with copious soft 

 pappus : — 



Herbs ; bracts of involucre narrow ; flowers not 

 corymbose : — 



Anther-cells tailed at the base, the tails of 

 adjacent anthers confluent 

 Anther-cells sagittate at the base, not tailed 

 or connate . . 

 Shrubs ; bracts of involucre broad ; flowers 

 corymbose 

 Flower-heads small, clustered in dense ovoid or 

 globose masses ; herbs with winged stems ; pappus 

 none 

 Bracts, of the involucre 1-seriate, sub-equal, free or 

 united, with sometimes a few short outer bractlets 



2. Elephantopus. 



3. Adenostemma. 



4. Ageeatum. 



5. Mikania. 



6. Dichkocephala. 



7. MiCEOGLOSSA. 



10. 



Bldmea. 



Laggeea. 



Pluchea. 



11. Sph^eanthus. 



