47. COMPOSITACEJE. 
413 
Suborder I. RADIIFLORHS. (Corymbiferje Vaill., 
Juss. &c.) 
(The Daisy, Groundsel, Everlastings, &c.) 
FI. of disk tubular mostly perfect and regular, of margin 
often imperfect (female or neuter) mostly ligulate. Style not 
jointed or swollen upwards. 
FI. either in small inconspicuous oblong or hemispherical 
discoid ad i. e. rayless or inconspicuously rayed heads ( Erige - 
ron , Eupatorium , Gnaphalon , Artemisia , Gnaphalium, &c.), or 
conspicuously rayed (Daisy, Ox-eye Daisy, Sunflower , Dahlia, 
Mary gold, Chrysanthemum, &c.), with the ray mostly w. or y., 
rarely b. or purple. Herbs or shr., very rarely tr., often aro- 
matic-bitter, never milky. L. and heads scarcely ever (exc. 
Hoplophyllum, Iphiona ) prickly-spinose. 
§ 1. Anthers ecaudate or awnless at the base. 
A. Receptacle (with very few exceptions and no Madeiran) 
naked i. e. without chaffs or scales. 
tfTribe I. AGERATEsE. 
Heads discoidal homogamous ; fl. all perfect tubular regular. 
Branches of style elongate cvlindric or subclavate obtuse smooth 
upwards. Ach. angular. Pappus chaffy. — Herbs mostly ann. 
rarely per. sufffutescent. L. opposite ovate toothed or crenate. 
Fl. w. or bluish without ray. 
ffl. Ageratum. Heads many-fld. hemispherical ; scales 
many in 2 or 3 rows subequal imbricate linear acuminate. 
Fl. 5-fid. Ach. 5-angular. Pappus of 5 or 10 free un- 
combined distinct chaffs produced into rough awns. — Fl. 
w., pale b. or lilac. 
tfTribe II. E U PA T OR IE A. 
Heads discoidal homogamous ; fl. all perfect tubular regular. 
Branches of style elongate cvlindric or semicylindric pubescent 
upwards. Ach. cylindric ribbed. Pappus pilose. — Fl. w. or 
purple without ray. 
tf2. Eupatorium. Heads many-fld. cylindric ; scales rather 
few subequal imbricate. Fl. 5-fid, tube funnel-shaped or 
gradually widening upwards from the base. Branches of 
style cylindric obtuse, with 2 distinct narrow stigmatic 
marginal welts or borders below their middle. Recept. 
naked. Ach. obconic-oblong angular-ribbed. Pappus finely 
scabrous or pubescent in a single row. — Herbs or suffr. 
L. mostly opposite. 
