LXXI. COMPOSITE. 5 



flowers ^ , fertile. Eeceptacle paleaceous. Pappus of many 

 palese, awned or plumose. 



Heads rajed ; paleae of the pappus pliimoso- 



ciliate 37. Tiudax. 



Tribe VI. ANTHEMIDE^. Heads heterogamous, raved or dis- 

 coid ; or homogamous, rayless. Invol.-bracts 2-co - seriate, dry 

 or with scarioiis tips. Eeceptacle paleaceous or naked. Anthers 

 not tailed. Style- arms truncate. Pappus or coroniform, 

 rarely shortly paleaceous. Leaves usually alternate. Corollas 

 of the disk yellow ; those of the ray variously colored. 



Corollas of ^ flowers 4-fid 38. Centipeda. 



Corollas of § flowers 5-lid 39. Autemisia. 



Tribe VJI. SENECIONEJE. Heads heterogamous, rayed or dis- 

 coid ; or homogamous, rayless. Invol.-bracts usually 1-seriate 

 and subequal, with a few short outer bracts at their base, rarely 

 CO -seriate. Eeceptacle usually naked. Anther-bases obtuse or 

 with 2 short points, rarely tailed. Style-arms of ^ flowers trun- 

 cate or appendiculate. Pappus of tine hairs. Leaves usually 

 alternate.-_ Disk-flowers yellow; ray-flowers usually also yellow, 

 rarely variously colored. 



Suht)-ibe 1. EusENECiONEyi:. Invol.-bracts 1-2- seriate, free or 



soon becoming so, sometimes with few or many bracteoles. 



Style-arms of J^ flowers truncate or obtuse, penicillate or 



with a hairy tip. 



Heads liomogamous. 



Heads bracteolate ; style-arms ending in 



long hairy appendages 40. Gynuua. 



Heads ebracteolate, discoid ; flowers pur- 

 ple or red ; style-arms appendiculate . 41. Emilia. 

 Heads bracteolate or not, discoid ; style- 

 arms with short ovoid tips ; flowers 



yellow. Fleshy glabrous herbs 42. Notonia. 



Heads heterogamous, rayed (rarely homo- 

 gamous and rayless), bracteolate or not; 

 style-arms truncate 43. Sen-ecio. 



Tribe VIII. CYNAIIE.E. Plowers all tubular. Invol.-bracts 

 many-seriate, imbricate, tips often with a scarious spinous or 

 leafy appendage. Eeceptacle often fleshy, densely bristly or 

 paleaceous, rarely simply pitted. Corolla-limb narrow, deeply 

 5-lid. Anthers tailed. Styles subentire, or the arms short, 

 hairy or thickened towards the base. Pappus setose or pale- 

 aceous, very rarely 0. Achenes often hard. Lea\es alternate, 

 often spinous. 



Suhtribe 1. EcniNOPSE.E. Heads l-flowered, crowded in dense 

 globose balls. 



Thistle-like herbs 44. EcniNors. 



Suhtribe 2. Cahduixe.e. Heads distinct, usually cc -flowered. 

 Pappus-hairs distinct or connate into a deciduous ring. 

 Achenes glabrous, the ai-eole horizontal. 



Pappus-hairs paleaceous, many-seriate ; fila- 



meuls hairy 45, Goniocaulon, 



