COMPOSITE. 291 



EUPATORIUM 



III. Inuloidea). 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. Heliaiithoiilese. Anthers not caudate : style-branches with truncate 

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

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

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



V. Heleiiioideae. Anthers not caudate: style-branches truncate or 

 variously appendiculate: involucre not scarious: receptacle without any 

 bracts subtending the flowers: p.ippus from setiform to paleaceous or 

 none. 



VI AnthemldeiB. Anthers not caudate: style-braiches 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. Senecioiiidese. 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 3oft-capillary bristles 



VIII. Carduinese \nthers conspicuously caudate, and with elongated, 

 mostly connaie 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 

 pode" below : involucre much imbricated : receptacle densely eetose or 

 flmbrillate or favose : pappus usually of many plumose bristles: heads 

 never truly radiate 



Suborder II. LIGULIFLORiE. 



Herbs with milky juice. Corollas all ligulate and flowers all 

 hermaphrodite. 



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

 stigmatic only toward the base: receptacle naked or paleaceous. 



Tribe I. EUPATORIE.E. DC. Prodr. v, IO4. Heads homoga- 

 mous, discoid: Flowers hermaphrodite, with tubular and regular 

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

 thers without tails at base. Style-branches elongated, more or less 

 clavate or thickened upward, minutely papillose or puberulous, or 

 glabrous; the stigmatic lines only near the base and inconspicuous. 

 Flowers never yellow. 



1. Gupatoriam. Involucre of more than 4 bracts: ai'henes 5-angled, 

 destitute of intervening ribs : pappus of wholly capillary scabrous 

 bristles 



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

 aohenes Id-costate or striate : pappus a single series of canillary bristles. 



1 .KUPATORIUM 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-flowered. Involucre cyl- 



