ixxviii. COMPOSITE!. (J. D. Hooker.) 223 



late, or style of sterile fl. entire. Achenes 3-4-angled or terete or compressed. 

 Pappus of 2-4 bristles or paleaceous or 0. 



Subtiibe 1. LAGASCEiB. Heads 1-flowered in glotose clusters ; invol. bracts 

 forming a 5-fid tube. 



A villous or scabrid herb ; lower or all the leaves opposite . 48*. Lagascea. 



Sabtrihe 2. MrLLBKiE^S!. Beads few-flowered. Fl. g sterile with undivided 

 styles. Receptacle naked in the centre. 

 Achenes and inflorescence with stipitate glands 49. AnEirocAtiLON. 



Suhtribe 3. Mblampodib*. Heads many-flowered. Fl. g sterile with un- 

 divided styles. Meceptacle paleaceous all over. 



Achenes dorsally compressed, with acute margins, embraced 



by the paleas of the receptacle 60. Chktsooondm. 



Suitribe 4. Ambkosiks;. Heads heterogamous or unisexual. Fl. 5 sterile 

 with undivided styles ; $ apetalous. Anthms nearly free, with inflexed appen- 

 dages. 



Invol.-bracts of S H- free ; of $ forming a 2-flowered 2-celled 



capsule armed with glochidiate spines 51. Xanthidm. 



Suhtribe 5. Vbebesine.e. Heads hetero- or homogamous. Fl. J all 

 fertile. Achenes of the disk angled, subterete, or laterally compressed, crowned 

 with 2-3 bristles or scales or naked. — Leaves usually opposite. 



* Inner invol.-bracts embracing the achenes. 



Outer invol.-bracts 5-glandular .52. Siegesbeckia. 



Outer invoL-bracts 4, broad, in opposite pairs, a marsh herb 53. Enhydra. 



** Inner invol.-bracts not embracing the achenes. Pedeee of receptacle fiat^ 

 narrow. 

 Outer invol.-bracts many 54. Eclipta. 



*** Inner invol.-bracts not embracing the achenes. Paleee of receptacle con- 

 cave, embracing the achenes. 



Bay-fl. ligulate, sterile. Achenes not winged nor ciliate . . 55. Scleeocakpus. 



Bay-fl. with small ligules. Achenes not winged 66. Blainvillea. 



Bay-fl. with large yellow ligules. Achenes thick .... 57. Wedelia. 

 Eay-H. with white or yellow ligules. Achenes ciliate . . .58. Spilanthes. 



Svhtribe 6. CoBEOPSiD'B.a!. Heads hetero- or homogamous. Fl. 2 all fertile 

 or neuter. Achenes dorsally compressed, 2-4-awned or naked. 



* Outer invol.-bracts herbaceous, subeqiud ; inner shorter lihe the paiece of the 

 receptacle. 



Achenes small, snb-4-angled, sheathed at the tip by the hairy 



corolla. Pappus ...... ^ 68*- Goizotia. 



Achenes flat, margins lacerate and winged. Pappus of bristles 68*. Stneurei.la. 



** Outer involucral bracts few, small; imier membranous, connate belo70. 



Style-arms with short appendages. Leaves alternate . . .69. Glossocaedia. 

 Style-arms with short appendages. Leaves opposite. Achenes 



usually 2-4-awned ' 60. Bidens. 



Style-arms with long appendages. Achenes with 2 bristles . 61. Glossogyne. 

 Style-arms with long appendages. Achenes awnless . . .62. Ghbysanthellum. 



SubtrS>e 7. Galin'SOGB.S!. Heads hetero- or homogamous. Fl. 5 all fertile. 

 Achenes with short bristle-like palese. 



Pappus palese entire or fimbriate 62*. GALmsooA. 



Pappus palese awned, plumose 62*. TaiDAx. 



