SYNANTHEREiE. 381 



Subseries 7. Senecioneee.— Bisk-flowers hermaphrodite. Anthers not tailed. Pappus 

 pilose. — Leaves usually alternate. 



48. NEUROL^NA, R. Br. 



Head discoid, homogamous. Involucre imbricate : inner scales coloured. Receptacle 

 flattish, paleaceous. Style-branches with a conical summit. Achenium terete, shortly sti- 

 pitate: pappus-hairs scabrous.— A suffrutescent, scabrous herb; leaves tapering at the hose 

 serrate or trifid ; involucre-scales blunt, striate ; heads yellow, in a corymbose panicle. 



140. WT. lobata, R. Br.— SI. t. 154./. 4.— Conyza, L. Calea, Sw. — 4'-7' high; leaves 

 variable, oblong-lanceolate or ovate-lanceolate, cuneate below the lobes, puberulous, scabrous 

 or tomentose beneath. — Hab. Jamaica !, all coll., common in the hills and valleys along 

 riversides ; Dominica !, Imr., S. Vincent !, Guild. ; Trinidad !, Cr. ; [Cuba 1 and Mexico ! 

 to Ecuador ! and Guiana !]. 



49. ERECHTHITES, Raf. 



Head heterogamous : exterior flowers $, filiform, central hermaphrodite. Involucre 1- 

 scrial, with exterior accessory scales. Receptacle naked. Style-branches with a conical 

 summit. Achenium terete, striate, with keels, tapering above: pappus soft. — Annnal herbs : 

 habit of Sonchus : heads in corymbs, whitish. 



141. E. hieracifolia, Raf. Glabrescent or hairy ; stem erect, striate ; leaves oblone- 

 lanceolate, sessile at the tapering base, dentate or inciso-dentate ; corymb suherect • invo- 

 lucre cylindrical ; exterior scales 6-12; achenium slightly tapering above. — Senecio L. 



Inner scales of the involucre somewhat combiued, at length distinct. 



[a. Glabrescent ; inner scales of the involucre broadly linear, 8'" long, exterior about 6 

 much shorter. — United States ! ; Venezuela !] 



0. carduifolius, DC. Glabrescent ; inner scales of the involucre narrow, 4"'-5'" ] on „ 

 exterior about 12, half or \ as long, somewhat squarrose. — Senecio hieracifolius, fifey. 

 Esseq. I 



y. cacalioides, Less. Hairy ; inner scales of the involucre narrow, 5"'-6'" long, exterior 

 about 8, % as long, suberect. — Sonchus agrestis, Sw. 



Hab. Jamaica !, all coll., a common weed (7) ; Antigua !, Wullschl. (0) ; S. Vincent ! 

 Guild. ; Trinidad !, Cr. 08) ; [United States ! to Buenos Ayres ! ; naturalized in Mauritius!]! 



50*. EMILIA, Cass. 



Head discoid, homogamous. Involucre 1-serial, devoid of accessory scales. Receptacle 

 naked. Style-branches with a conical summit. Achenium 5-gonal, scabrous on the angles : 

 pappus soft. — Annual herbs ; heads in loose corymbs. 



142*. E. aoncliifolia, DC. Glaucous, glabrescent ; inferior leaves lyrate, superior 

 sagittate, stem-clasping ; heads long-pedicellate, orange-purple, many-flowered ; involucre 

 cylindrical, nearly as long as the flowers; coroUse straight. — Cacalia, L. — Hab. Jamaica!, 

 Al. a weed ; S. Kitts !, Els., Antigua !, Wullschl., Dominica !, Imr. ; Triuidad !, Sieb. Tr. 

 78 j [Guiana I to Brazil ! ; East Indies !]. 



51. GYNOXYS, Cass. 



Head radiate : ray-flowers ? , ligulate. Involucre 1-serial, with exterior accessory scales. 

 Receptacle flat naked. Style with a tumour at the base : branches terminated by a pointed, 

 subnliform hispidulous appendage. Achenium subcylindrical : pappus soft.— Woody plants, 

 often scandent ; htais yellov, corymbose. — 



Many South American, and chiefly the West Indian Senectones, have a short conical ap- 

 pendage to the style-branches : hence Gynorys, if Senecio is not further dismembered, is as 

 yet an artificial genus. 



14^ Q incana Less Whitish, with thin arachnoid down ; leaves alternate, subsessile, 

 lanceolate-oblong or' elliptical-oblong, pointed, dissected into lobes or large teeth at the 



