SYNANTHERE^. 359 



dentate above the subtrunoate base, S-nerved, glabresoent above, pubescent and glandular 

 with minute -glands beneath; con/mis shortly trichotomous : heads 8-15-flowered, pedicel- 

 late, fastigiate; receptacle flat ; involucral scales oblong, striate, rounded at the top; ache- 

 niiun scabrous on the angles. — Plum. Bd. Burm. t. 130./. 1. — E. atriplicifolium,, iam. 

 (non Vahl). — Leaves 8"'-12"' diam. ; involucre 3i"' long.— Hab. Bahamas!, Swains.; 

 [Cuba, Haiti]. 



33. E. trigonocarpum, Gr. {n. sp.). Suffruticose, or shrubby; branchlets scabrous- 

 pubescent, sub-6-gonal, striate; leaves large, opposite, petioled, ovate, acuminate, cuneate at 

 the base, coarsely serrate, septuplinened, glabrate with impressed veins above, scabrous- 

 pubescent on the nerves, and glandular with minute glands beneath ; corymbs many-branched, 

 trichotomous: heads 8-15-flowered, numerous, approximate, pedicellate; receptacle flat ; 

 involucral scales oblong, striate, rounded at the top ; achenium i-gonal, subcompressed, 

 scabrous on the angles. — A branched, leafy plant ; leaves flaccid, 5"-3" long, 2i"-li" broad ; 

 corymbs l"-3" broad ; involucre 3'" long, 1'" broad, tawny ; scales tinged above, at length 

 shining-glabrous, 3-striate at the middle ; style-branches clavate ; achenium 1'" long, with 

 2 broader facets : angles prominulous : pappus white, soft : hairs slightly thickened at the 

 top. — Hab. Dominica !, Imr. 



§ 2. PHYlLAOfiOCEPHAiA, As. Gr. — Receptacle somewhat dilated letioeen the involucral 

 scales, flat above them. Involucre cylindrical, at length turbinate, many-serial : scales 

 spreading, or at the top squarrose, glairescent. 



/^ 34. E. ivifolium, L. Herbaceous, sufFrutescent ; stem erect, trichotomously branched 

 above, scabrous with incurved hairs, and glabrate, subcylindrical ; leaves opposite, lanceolate- ^ 

 linear, tapering at each end, subsessile, 3-nerved, liispidulous or glabrescent, dotted beneath, a 

 remotely serrate about the middle; corymbs loose: heads 10-20-flowered, pedicellate; re- y 

 ceptacle flat ; involucral scales oblong, striate, subtruncate-blunt at the recurved, greenish 

 summit, innermost oblong-linear, erect, rosy ; achenium slightly scabrous on the angles. — 

 2' high ; leaves 2"-l" long, 3"'-2"' broad ; involucre 3"' lon2 ; flowers purplish-blue. — Hab. 

 Jamaica I, Macf., in fields ; [Cuba ! to Guadeloupe ! ; Louisiana to Northern Mexico !]. 



§ 3. Subimbkioata, VC. Receptacle depressed, or minute, convex or flat above the 

 involucral scales. Involucre turbinate or campanulate : scales Z{-%)-serial, imbricate, 

 exterior shorter, rarely many-serial. 



* Receptacle convex, broader than the pedicel. 



35. E. cordifolium, Sw.! Shrubby; branches cylindrical, hirsute above; leaves op- 

 posite, shortly petioled, rigid, cordate, pointed, quintupliuerved, serrate, seabrous-pUose 

 with scattered hairs above, hirsute chiefly on the nerves and glandular beneath; corymbs 

 contracted: Ara(& 40-50-flowered, subsessile or shortly pedicellate ; receptacle convex ; in- 

 volucral scales 3-seiial, oblong-linear, bluntish, slightly striate, pilose, recurved-spreading; 

 achenium glabrous : pappus-hairs flattisb.— 3' high ; leaves 3"-2'' diam. ; involucre 2'" long ; 

 receptacle 1-i'" diam. — Hab. Jamaica !, Sw., on limestone rocks. 



36. E. montanum, Sw. I Shrubby ; branches cylindrical, hispid above ; leaves oppo- 

 site, shortly petioled, rigid, cordate or cordate ovate, pointed or bluntish, quintuplinerved, 

 serrate (or subentire), hispid with scattered hairs, glandular beneath ; corymbs trichotomous 

 with contracted branches : heads l5-Z5-flowered, -peikelUte; receptacle convex ; involucral 

 scales 2-3-seriaI, oblong-lanceolate, bluntish, striate, pilose, spreading; achenium glabrous : 

 pappus-hairs flattisb.— 8'-4' high; leaves 4"-14" long; receptacle half as broad as in the 

 preceding, involucre 1'" long ; flowers whitish. — Hab. Jamaica I, Sw., Pd., in the mountains, 

 S. Anns. 



37. E. cinercum, Gr.(n.sp.). Suffruticose, stout; stem cylindrical, velvety-tomeu- 

 tose • leaves opposite, petioled, ovate-lanceolate, long-acuminate, unequally serrate, tripli- 

 nerv'ed above the abruptly tapering, entire base, which is as long as the petiole, puberulous 

 above hoary with tomentose-pubesceut down and eglandular beneath ; corymbs tnchoto- 

 monslv paniculate: heads 10-7-fiowered, pedicellate, very numerous; receptacle mmute, 

 convex ■ involucral scales 10, spreading, 3-serial, very unequal, striate, glabrescent, with a 

 membranaceous, ciliatc margin, rounded at the top, interior oblong or oval-oblong, exterior 



