SYNANTHEREA 359 



dentate above the subtruncate base, Z-nerved, glabrescent above, pubescent and glandular 

 with minute glands beneath; corymbs shortly trickotomous .• heads 8 -15 -flowered, pedicel- 

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

 nium scabrous on the angles. — Phim. Ed. Burtn. t. 130./. 1. — E. atriplicifolium, Lam. 

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

 [Cuba, Haiti]. 



33. El. 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, septuplinerved, glabrate with impressed veins above, scabrous- 

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

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

 involucral scales oblong, striate, rounded at the top ; acheninm %-gonal, subcompressed, 

 scabrous on the angles. — A branched, leafy plant ; leaves flaccid, 5"-3" long, 2$"-\\" 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. Phymackocephaui, As. Gr. — Receptacle somewhat dilated between the involucral 

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

 spreading, or at the top squarrose, glabrescent. 



34. E. ivifolium, L. Herbaceous, suffrutesccnt ; stem erect, trichotomously branched 

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

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

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

 ceptacle flat ; involucral scales oblong, striate, subtruncate-blunl 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'" loni ; flowers purplish-blue. — Hab. 

 Jamaica !, Mac/., in fields ; [Cuba ! to Guadeloupe ! ; Louisiana to Northern Mexico !]. 



§ 3. Subimbricata, DC. Receptacle depressed, or minute, convex or flat above the 

 involucral scales. Involucre turbinate or campanulate : scales 3 (~2)-serial, imbricate, 

 exterior shorter, rarely many-serial. 



* Receptacle convex, broader than the pedicel. 



35. E. cordifolmm, Sw. 1 Shrubby; branches cylindrical, hirsute above; leaves op- 

 posite, shortly petioled, rigid, cordate, pointed, guintupliuerved, serrate, scabrous-pilose 

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

 contracted : heads 40-50-flowered, subsessile or shortly pedicellate ; receptacle convex ; in- 

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

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

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



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

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

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

 with contracted branches : heads \h-2h -flowered, pedicellate; receptacle convex ; involucral 

 scales 2— 3-serial, oblong-lanceolate, blnntisb, striate, pilose, spreading; achenium glabrous : 

 pappus-hairs flattish. — 3'-4' high; leaves 4"-l£" long ; receptacle half as broad as in the 

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

 S. Anns. 



** Receptacle minute. 



37. E. cinereum, Gr. (n. sp.). Suffruticose, stout; stem cylindrical, vclvety-tomcn- 

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

 nerved above the abruptly tapering, entire base, which is as long as the petiole, puberulous 

 above, hoary with toraentosc-pubescent down and eglandular beneath ; corymbs trichoto- 

 mously paniculate: heads 10-7 flowered, pedicellate, very numerous; receptacle minute, 

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

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



