SYNANTHEREjiE. 381 



Subseriea 7. SeneCiioaeta.—Bist-flowers hermaphrodite. Anthers not tailed. Fafjm 

 pilose. — Leaves ususJly alternate. 



48. NEUROL^NA, B. Br. 



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

 flattisli, paleaceous. Sii/le-iranches with a conical summit. Achenium terete, shortly sti- 

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

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



140. N. lobata, B. Br.— SI. t. 154./. 4.— Conyza, L. Galea, Sw.—i'-f high ; leaves 

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

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

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

 to Ecuador ! and Guiana !] . 



49. ERECHTHITES, Raf. 



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

 serial, with exterior accessory scales. Beceptacle naked. Style-branches with a conical 

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

 habit of Sonchus : heads in corymbs, whitish. 



141. E. hieracifolia, Baf. Glabresceut or hairy ; stem erect, striate ; leaves oblong- ' 

 lanceolate, sessile at the tapering base, dentate or inciao-dentate ; corymb suberect ; invo- 

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

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



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

 much shorter. — -United States ! ; Venezuela !] 



3. carduifoUus, DC. Glabreacent ; inner scales of the involucre narrow, 4"'-5"' long, 

 exterior about 12, half or ^ as long, somewhat squarrose. — Senecio hieracifolius, Mey. 

 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 i, all coU., a common weed (-y) ; Antigua I, WuUscM. (0) ; S. Vincent !, 

 Guild. 1 Trinidad !, Or. (fi) ; [United States 1 to Buenos Ayres 1 ; naturalized in Mauritius !]. 



50*. EMILIA, CiKs. 



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

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

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



142*. E. sonchifolia, DO. Glaucous, glabresceut ; inferior leaves lyrate, superior 

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

 cylindrical, nea/rly as long as the flowers ; corollse straight. — Cacalia, L. — Hab. Jamaica !, 

 Al., a weed; S. Kitts !, Els., Antigua I, Wullschl., Dominica 1, Imr. ; Trinidad !, Sieb. Tr. 

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



51. GYNOXYS, Cass. 



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

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

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

 often seandent ; heads yellow, corymbose. 



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

 pendage to the style-branches ; hence Gynoxys, if Senecio is not further dismembered, is as 

 yet an artificial genus. 



143, G. iii,cana. Less, Whitish, with thin arachnoid down ; leaves alternate, subsessile, 

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



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