LXV. COMPOSITyE. 787 



Riiy-florebs sterile, often rose or violet. Aohenes more or less beaked 01. 'Cosmos. 

 Ray-florets sterile or rarely fertile oi' none. Stylo branches with short 



appendages. Aohenes usually 2 to 4-awned 62. Bidens. 



Ray-florets fertile. Style branches with long appendages. Achenes 



with 2 bristles 63. Glossogyne. 



SuBTiiiBE V. GalinSOg'eee. — Heads lietern- or hoviociamotis. The, hermnphrodite florets all 

 fertile. Acheiws with short bristle-lilce scales. 



Pappus scales entire or fimbriate 04. 'Galinsoga. 



Tribe VI. ZZelenioidese. — Heads homogammis and discoid or heterogamous with the ray- 

 florets female and disk ones hermaphrodite. Involucnil bracts in 1 or few ro^cs. Receptacle naked. 

 Corolla of the disk-florets tubular, refiular, shortly 5-cleft. Anthers appendaged at the apex ; base 

 obtuse, not caudate. Style braiich£s obtuse or truncate. Achenes narrowly oblong. Pappus 

 consisting of aion-Hke scales. 



SuBTEiBE I. Flaveriese. — Involueral bracts l-seriate, equal, eglandulose. Achenes narrow, 

 8 to 10-ribbed, Style-branches truncate, penicillate. 



Involueral bracts free. Ray-florets solitary or none, disk ones solitary or 

 few. Pappus none • 65. Flavekia. 



SuETRiEE II. Tag^etinese. — Involueral bracts l-seriate, equal, with scattered oil-glands. 

 Achenes narrow, much striate. 



Heads radiate or rarely homogamous. Involueral bracts united in a 



tube. Pappus scales awn-like, 5 or 6 66. Tagetes. 



Tribe VII. A.tk.XYk.etn.\AeaB.— Heads heterogamous, radiate or discoid. Involueral bracts 

 few or many-seriate, imbricate. Receptacle naked or furnished with scales subtending the florets. 

 Outer florets female, ligulate or tubular ; inner ones hermaphrodite, tubtilar. Corollas 4 to 5- 

 lobed. Anthers without tails, obtuse at the base. Style-branches usually truncate. Achenes 

 rather small. Pappus none or obliquely coroniform or consisting of short teeth. 



Heads heterogamous, disciform, or very rarely homogamous. Involueral 



bracts 1 to 2-seriate. • 

 Heads disciform, pedunculate. Involueral bracts 1 to 2-seriate . . .67. Cotula. 

 Heads disciform, subsessile. Involueral bracts spreading in fruit . . 68. Centipeda. 

 Heads sessile. Achenes flattened, crowned by the hardened style or 



by 2 prominent divaricate angles 69. Soliva. 



Heads nearly sessile. Achenes large, flat, with herbaceous involute 



wings. Pappus none 70. Ceeatooyne. 



Heads clustered within the radical leaves. Achenes subturbinate, 



silky-villous. Pappus scales oblong 71. Isoetopsis. 



Tribe VIII. Senecionidefe. — Heads either heterogamous with the female florets ligulate 

 or rarely filiform, or sometimes liomogamous with all the florets hermaphrodite and ttibular. 

 Receptacle without scales. Anthers obtuse or scarcely pointed at the base, without tails. Style- 

 branches truncate and penicillate, or rarely with pubescent tips or appendages. Pappus of capil- 

 lary bristles. Involueral bracts 1 or 2-seriate, with or iHthout a few small outer ones round 

 their base. 



Outer female florets filiform, usually in 2 or 3 rows 72. Eeechthites. 



Florets all tubular and hermaphrodite, or the outer ones ligulate. 



Style branches with subulate tips 73. Gynuea. 



Involucre not oalyeulate. Style branches with an appendage . . 74. Emilia. 



Style branches truncate. Inflorescence terminal. Indumentum cottony 

 or simple 75. Senecio. 



Tribe IX. Arctotidefe. — Heads heterogamous, radiate, or rarely homogamous by deficiency 

 of the ray -florets. Ray-florets female or neuter. Disk-florets hermaphrodite, fertile, or the inner- 

 most ones sterile. Involueral bracts in many rows, imbricated, broadly scarious or very acute or 

 spinous at the apex. Corollas of the ray ligulate ; those of the disk tubular, regular. Anther- 

 base entire or sagittate ; auricles obtuse or acute or mucronate, not tailed. Style of tlie disk-florets 

 obtuse, short. Achenes usually thick. Pappus paleaceous or coroniform, or wanting. 



Achenes glabrous. Pappus none 76. Cymbonotus. 



Achenes densely woolly. Pappus of short scales concealed in the wool . 77. *Cryptostemma. 



Tribe X. Cynaroideae. — Florets all tubular^ Involueral bracts m^7iy -seriate, imbricate; 

 tops scarious, spinous or foUaceous. Receptacle densely bristly or paleaceous, rarely simply pitted. 

 Corolla limb slender, deeply S-fld. Anther-base sagittate; auricles connate, mucronate, or u-ith 

 fimbriate tails. Styles subentire or branches short-hairy or thickened towards the base. Achenes 

 often hard; pappus various, rarely none, 



Part III. E 



