LXXill. COMPOSITE (OLIVER AND HlERx\). 261 



ceptacle naked or rarely paleaceous, smooth or alveolate or fimbrillate. 

 Corollas of the disk-florets either tubular and pentamerous or bilabiate ; 

 corollas of the ray-florets ligulate with or without a shorter bilobcd 

 inner lip. Anther-base with long tails. Style-branches obtuse 

 rounded or truncate at the apex, not appendaged. Achcnes crowned 

 with a setaceous or paleaceous pappus. — Herbs or I'arely shrubs with 

 alternate or radical leaves and usually purple or scarlet flowers. 



Caulescent branched herbs or shrubs. 



Involucral bracts obtuse or lanceolate or subulate, not 

 pungent. 

 Florets all hermaphrodite tubular. Involucral bracts 



very obtuse 101, Pj>kiotaxis. 



Heads homogamous, radiate, with all the florets her- 

 maphrodite. Involucral bracts ovate or lan- 

 ceolate 102. Erythrocephalum. 



Heads heterogamous, radiate. Involucral bracts subu- 

 late-prolonged 103. Phyllactinia. 



Involucrul bracts rigid, straight, pungent. 



Pappus pluriseriate . . . 104. Dicoma. 



Pappus uniseriate * 105. Hochstetteria. 



Acaulescent, scapigeroxis herbs 106. Gerbera. 



Tribe XIII. Clcboriaceae. Capitula homogamous; florets all 

 hermaphrodite, ligulate, fertile or occasionally a few barren. Corolla- 

 tube slender; ligule 6-toothed. Anthers appendaged at the apex, 

 sagittate at the base, auricles acute or setaceous-acuminate, not tailed. 

 Style-branches slender, rather obtuse or rather acute. — Herbs with 

 usually milky sap, alternate or radical leaves, and yellow or occasionally 

 purple or blue flowers. 



Pappus paleaceous, or with not more than 12 setae, or 

 coroniform, or altogether wanting. 

 Corona of the pappus short ; setse 2-3 or 0. Flowers 



yellow, lieceptacle paleaceous 107. Scolymtjs. 



Palese of the pappus short or wanting. Flowers blue. 



Beceptswle naked or sparingly fimbrillate . . .108. Cichoritjm. 

 Setae of the pappus 12, in one row. Flowers yellow. 



Receptacle alveolate 109. Tolpis. 



Pappus setaceous, copious. 



Setae of the pappus plumose 110. Picris. 



Setae of the pappus simple, smooth or barbellate, not 

 plumose. 

 Achenes more or less beaked. 



Achenes subterete or obscurely angular, not com- 

 pressed 111. Crepis. 



Achenes, at least the outer ones, more or less 



Achenes all similar 112. Lactuca. 



Outer achenes compressed, the inner ones co- 

 lumnar 113. HETERAClWiKA. 



Achenes not beaked. 



Outer involucral bracts, with conspicuous scarious 



margins. Achenes oblong .114. Reichabdia. 



Outer involucral bracts herbaceous or achenes 

 narrow. 

 Achenes 10 — oo -cobtate or -striate. 



