258 LXXTIT. COMPOSIT.?: (OLIVER AND HIERN). 



Achenes thick. Pappus very caducous .... 62. Melanthrra. 

 Achenes (of the disk) compressed. Pappus or of 

 2-3 aristae or setae. 



Capitula loosely cymose. Achenes winged . . 63, Ximenesia. 



Capitula solitary. Achenes not winged . . . 6i. Spilanthks. 



Subtribe iii. CoREOPSiDEiE. 



Involucral bracts free ; the outer ones herbaceous, the inner 

 ones like the palese of the receptacle. 



Achenes subtetragonal, without pappus 65. Guizotia. 



Achenes nearly flat, winged, 2-3-aristate 66. Svnedrella. 



Inner involucral bracts connate at the base, outer few, 

 smaller. 

 Style-branches truncate, usually shortly appendaged. 



Achenes without aristae 67. Microlecane. 



Achenes furnished with 2-4 aristae. 



Aristae with ascending setulae (or smooth) .... 68. Coreopsis. 



Aristae with descending setulae 69. Bidens. 



Style -branches tapering in long puberulous appendages . 70. Chrysanthelltjm. 



•Tribe VI. Kelenloldeee. Capitula homogamons and discoid or 

 heterogamous with the ray- florets female and disk-florets hermaphrodite. 

 Involucral bracts in 1 or few rows. Receptacle naked. Corolla of the 

 disk-florets tubular, regular, shortly 5-cleft. Anthers appendaged at 

 the apex ; base obtuse, not caudate. Style-branches obtuse or truncate. 

 Achenes narrowly oblong. Pappus consisting of aristiform paleae. — 

 Herbs (or undershrubs) with opposite entire or lobed leaves and yellow 

 flowers. 



Involucral bracts in 4-5 rows. Achenes 4-5-angled. Heads 



discoid. Leaves entire 71. Jaumea. 



Involucral bracts in 1 row. Achones striate. Heads 



radiate. Leaves cut 72. * Tagetes. 



Tribe VII. Anthemldeae. Capitula heterogamous, radiate or' 

 discoid. Involucral bracts pauci- or multi-seriate, imbricated. Re- 

 ceptacle naked or furnished with paleaa subtending the florets. Outer 

 florets female, ligulate or tubular ; inner florets hermaphrodite, tubular ; 

 corollas 4-5-lobed. Anthers not tailed, obtuse at the base. Style- 

 branches usually truncate. Achenes rather small. Pappus or 

 obliquely coroniform or consisting of short teeth. — Herbs or under- 

 shrubs, with alternate or rarely opposite pinnatisect or toothed leaves, 

 yellow disk-florets and white or yellow ligules. 



Receptacle furnished with paleae 73. Anthemis. 



Receptacle naked or fimbrilliferous. 



Heads radiate 74. Matricaria. 



Heads discoid. 



Heads solitary. $ corollas 4-toothed 75. Cotula. 



Heads in corymbose or hemispherical cymes. ^ co- 

 rollas 4-toothed 76. Schistostephium. 



Heads in thyrsoid racemes. $ corollas 5-toothed . 77.. Artemisia. 



Tribe VIII. Senedonldeae. Capitula heterogamous radiate or 

 rarely discoid, or homogamous. Involucral bracts in 1-2 rows or 

 rarely in many graduated rows, occasionally connate at the base or 



