COMPOSITE. 291 



BUPATORIDM. 



III. luuloidea?. Anthers caudate: style-branches of hermaphrodite 

 flowers slender, destitute of any terminal appendage, the stigmatic lines 

 extending to or vanishing near the naked obtuse or truncate summit. 



IV. Helianthoideie. Anthers not caudate: style-branches with truncate 

 or variously appendiculate pubescent or hispid tips: involucre not sca- 

 rioua : receptacle with chaffy bracts subtending at least the outer disk 

 flowers: pappus none or various : never of fine capillary bristles. 



V- Helen ioi (lea 1 . Anthers not caudate: style-branches truncate or 

 variously appendiculate: involucre not scarious : receptacle without any 

 bracts subtending the Mowers: pappus from setiform to paleaceous or 

 none. 



VI Antlieinideae. Anthers not caudate: style-branches mostly truncate : 

 involucre of dry and scarious bracts, receptacle without or sometimes 

 with bracts subtending the flowers : pappus coroniform r of short. 

 palese or none. 



VII. Seueeionidea*. Anthers not caudate; style-branches of hermaph- 

 rodite flowers mostly obtuse or truncate, with or without short append- 

 ages: involucre of mostly equal not scarious bracts: receptacle without 

 bracts subtending the flowers: pappus of -oft-capillary bristles 



VIII. Carduiiiese Anthers conspicuously caudate, and with elongated, 

 mostly connate cartilaginous appendages at tip: style branches short 



or united, without appendage, stigmatic quite to the obtuse summit, 

 smooth and naked, but sometimes a pubescent or hispidulous ring or 

 node below: involucre much imbricated: receptacle densely setose or 

 fimbrillate or favose : pappus usually of many plumose bristies: heads 

 never truly radiate. 



Suborder II. LIGULIFLORjE. 



Herbs with milky juice. Corollas all ligulate and Mowers all 

 hermaphrodite. 



IX. CichoriaceSe. Anthers not caudate: style-branches filiform, naked, 

 stigmatic only toward the base: receptacle naked or paleaceous. 



Tribe I. El'PATORIEJ-: Dr. Prodr. v, 104. Heads homoga- 

 mous, tliscoid: Flowers hermaphrodite, with tubular and regular 

 corollas; receptacle in a few genera paleaceous, in most naked. An- 

 thers without (aih at hose. Style-branches elongated, more or less 

 clavate or thickened upward, minutely papillose or puberulous, or 

 glabrous; the xtigmatic liars only near the base an 1 inconspicuous. 

 Flowers m n r yellow. 



i. Eupatorium. Involucre of more than 4 bracts: achenes 5-angled, 

 destitute of intervening ribs: pappus of wholly capillary scabrous 

 bristles 



2. (oleosantlius. Bracts of the involucre not herbaceous striate- nerved : 

 achenes 10-costate or striate: pappus a single series of capillary bristle-. 



1 EUPATORIUM Tourn. Inst. t. 259. 



Perennial herbs or somewhat shrubby plants with opposite 

 (rarely alternate or verticillate) mostly entire leaves that are 

 often connate at base, and mostly corymbose heads of purple 

 blue or white flowers. Heads 3-many-fiowered. Involucre cvl- 



