358 SYNANTHERE.E. 



base, triplinerved, with the lateral nerves very distaut from the base, dotted beneath with 

 minute, scattered glands, callous on the margin, remotely serrate: serratures glandular, 

 blunt; corymbs contracted, compound: heads 10-20-flowered, pedicellate ; receptacle flat ; 

 involucral scales ovate and oblong, blunt, slightly 3-striate ; achenium somewhat scabrous 

 on the angles. — Allied to the preceding, but peculiar by its broadly sessile leaves. Leaves 

 3"-l£" long, 1 2"'-6"' broad ; involucre 4'" bug, shining-tawny. — Hab. Dominica !, Imr., 

 in the mountains. 



28. E. macrodon, DC. Shrubby, glabrous ; branches subcylindrical-striate ; leaves 

 opposite, petioled, ovate-lanceolate, acuminate, contracted at the base, triplinerved, dotless 

 beneath, callous on the margin, serrate : serratures glandular, blunt, approximate ; corymbs 

 expanded, compound : heads 10-20-flowered, pedicellate; receptacle flat ; involucral scales 

 ovate-roundish and ovate-oblong, blunt, 3-5-striate ; achenium slightly scabrous on the 

 angles. — Leaves 3"-l£" long, 15"'-8'" broad ; involucre purplish, 4'" long. — Hab. Domi- 

 nica !, Imr., in the mountains. 



** Branches and leaves pubescent, or the latter glabrate. 



29. E. conyzoides, V. Shrubby, slightly villous-pubescent above; branches cylin- 

 drical ; leaves opposite, petioled, ovate or ovate-lanceolate, acuminate, often cuneate at the 

 base, triplinerved, dotted with minute scattered glands, and glabrescent beneath, serrate 

 above the base, or subentire ; corymbs trichotomous .- heads 10-20-flowered, pedicellate, 

 numerous; receptacle flat ; involucral scales rounded at the top, striate, tinged above, in- 

 terior longer, oblong; achenium scabrous on the angles. — Schrank, H. Monac. t. 85. — A 

 straggling shrub, 6'-10' high, variable in the down, the form and serratures of the leaves, 

 the distance of their lateral nerves from the base, the size of the heads, and somewhat in the 

 point of the interior involucral scales ; larger leaves 3" long, 1 V broad ; flowers pale-blue 

 or white. 



a. Involucre 4'" long : inner scales blunt. — E. conyzoides, var. glabrescens, Steetz !, is a 

 similar form, but with shorter, 3"'-long involucres ; Brazilian forms have still larger, 5'"- 

 long involucres. 



P. heterolepis. Involucre 4'" long -. interior scales bluntish, or with a roundish-cuspi- 

 date point ; leaves usually glabrescent. 



Hab. Bahamas!, Swains.; Jamaica!, all coll. (o, <3); Antigua!, Nichols., Wullschl.; 

 [Cuba ! and Mexico ! to Brazil !]. 



SO. E. odoratum, L. Shrubby, villous ; branches cylindrical ; leaves opposite, petioled, 

 ovate or ovate-lanceolate, acuminate, often cuneate at the base, triplinerved, villous-pubes- 

 cent, and dotted with minute scattered glands beneath, coarsely serrate, with a few serratures 

 above the base, or subentire ; corymbs trichotomous, dense : heads 15-25-flowered, pedicellate; 

 receptacle flat ; involucral scales striate, interior oblong-lanceolate, acuminate, exterior 

 ovate-oblong, blunt ; achenium scabrous on the angles. — E. brachiatum, Wickstr. — 6' high ; 

 branches rigid, spreading; larger leaves 3" long, 1|" broad; involucre 4'" long: flowers 

 pale-blue, or white, scented. — Hab. Jamaica !, all coll., along roads ; Antigua !, Wullschl., 

 Dominica !, Imr., S. Vincent !, Guild. ; Trinidad !, Lockh., Sch. ; [Haiti ! to French islands !, 

 Nicaragua to Guiana!]. 



31. E. heteroclinium, Gr. («. sp.). Suffruticose, scabrous-pubescent, or villous, with 

 the hairs thickened at the base; branches cylindrical, striate; leaves opposite, petioled, 

 ovate-lanceolate, acuminate, serrate above the cuneate base, %-nerved, glandular with minute 

 glands beneath; heads 3~5-nate, pedicellate, 20-25-flowered, in a simple or few-branched 

 corymb; receptacle convex; involucral scales striate, ovate and oblong, blunt, inner- 

 most oblong-linear, bluntish ; achenium slightly scabrous on the angles. — 2-3' high, flower- 

 ing from the first year; leaves lf-1" long, 8"'-6'" broad, villous on both sides; involucre 

 4' long, rounded at the base, 2"' broad, pale : scales usually 7-striate, puberulous below the 

 slightly tiuged point, shining-glabrous below; flowers purple; style-branches clavate, 

 achenium 2'" long : pappus straw-coloured : hairs slightly thickened and scabrous at the 

 top ; convexity of the receptacle less high than broad. — Hab. Jamaica !, Al., Macf., M'Nab, 

 March, on rocks in the Eastern mountains, Port Royal, Liguana hills. 



32. E. repandum, W. Shrubby, subtomentose-pubescent ; branches striate, slightly 

 angular above ; leaves opposite, petioled, small, ovate-roundish or deltoid, blunt, cuneate or 



