LXXIII. COMPOSITE (OLIVER AND HIERN). 255 



Setae of pappus few, short, minutely glochidiate very ca- 

 ducous setae. Keceptacle naked convex . , . . 13. Miceotrichia. 



Pappus 0. Keceptacle naked, turbinate or columnar. 



Capitula white and purple or violet 14. Dichhocbphala. 



Pappus of minute subpaleaceous teeth. Receptacle naked, 



convex or conical. Capitula yellow 15. Geanoba. 



Pappus reduced to papillose annulus. Receptacle flat, 



paleaceous. Capitula yellow 16. Ceeuana. 



2 § BellidecB. $ fl. 1 -seriate, lignlate, ligule spreading 



or recurved, white. Pappus 17. Beachycome. 



3 § HeterochromecB. ? fl. l-oo -seriate, all or outer distinctly ligulate, ray white, 

 purple or blue. Pappus setaceous, 1-2-seriate. 



Ligule oval or oblong 18. Felicia. 



Ligule narrow or filiform 19. Eeioeron. 



4.§ ConyzecB. Capitula disciform, 9 fl. tubular filiform, ligule or inconspicuous. 

 Pappus setaceous. Capitula yellow more or less or rudimentary, ligule white. 

 Style of ^ fl. distinctly 2-fid. 



Achenes costate, scarcely compressed. Ligule present, 



white. Shrubs 20. Micboglossa. 



Achenes compressed. Ligule present yellow. Herbs . 21. Nidobeixa. 

 Achenes compressed. Ligule or minute. Capitula 



yellowish. Herbs or frutescent 22. Conyza. 



Achenes scarcely compressed, costate, Ligule present, 



yellow. Shrubs 23. Psiadia. 



Style of § fl. entire or emarginate. Ligule 0. Achenes 



terete. Erect annuals 24. Adblostioma. 



Tribe IV". ZniiloldeaB. Capitula heterogamons, radiate or nsually 

 discoid with outer florets pistillate and inner hermaphrodite or sterile, 

 or homogamous with all the florets hermaphrodite and tubular, or 

 rarely dioecious. Involucral scales usually in many rows, rarely sub- 

 2- seriate. Corolla of $ fl. ligulate or filiform, of 5 A' regular, tubular, 

 shortly lobed. Anther-base sagittate, usually tailed ; connective pro- 

 duced at the apex. Style-branches of the 5 A- narrow, more or less 

 flattened above, rounded or truncate, not appendaged at the apex. 

 Achenes various. Pappus usually setaceous or wanting. — Herbs, 

 shrubs, or small trees. Leaves alternate, undivided or rarely lobed. 



Dioecious. Involucral scales sub-2 -seriate, coriaceous Subtribe i. Tabchonanthe^. 

 Hermaphrodite. Involucral scales pluri- or pauci- 

 seriate or rarely few, scarious or herbaceous. 

 Female florets, when present, filiform or narrowly 

 tubular, not ligulate. 

 Style-branches of the hermaphrodite florets fili- 

 form, not truncate. 



Receptacle naked Subtribe ii. Pltjchkinb.«. 



Receptacle, at least about the circumference, 



paleaceous Subtribe iii. FiLAOiNEiE. 



Style-branches of the hermaphrodite florets 



truncate Subtribe iv. Gnaphalie^. 



Female florets, when present, ligulate or rarely 



tubular. 

 . Receptacle naked. 



Style-branches of the hermaphrodite florets 



truncate Subtribe v. Athrixik.*:. 



