SYNANTHERE.ZE. 857 



cceruleum, Sieb. Mart. 192 !— 2'-6' high, flowering iu the first year ; heads ovoid, early 

 expanded: flowers whitish (or blue). — Hab. Jamaica!, Dist., March, a weed in the moun- 

 tains ; Antigua !, Wullschl., Dominica !, Imr., S. Vincent !, Guild. ; Trinidad !, Or, ; [Cuba I 

 and Mexico ! to Peru ! and Brazil !]. 



13. EUPATORIUM, L. 



(Campuloclinium and Ooclinium, DC.) 



Head discoid. Involucre imbricate or 2-1-seriaI. Receptacle naked, glabrous, usually 

 flat. Corolla clavate or campanulate above. Achenium 5(-3)-gonal: pappus pilose. — 

 Shrubs or herbs ; heads mostly in terminal corymbs. 



The West Indian species do not admit of separating Camptdoclinium .- for those species 

 which present a convex or hemispherical receptacle above the involucre are too nearly re- 

 lated to others. Ooclinium, considered by Schultz Bip. Regensb. Fl. 1850, p. 419 as the 

 type of a particular division of Enpatoriaceee, on account of its compressed achenia, has no 

 better claims to be distinguished : for — 



1. I have a new Dominica Eupatorium, which, with the head of Cylindrocephala, and a 

 flat receptacle, presents 3-goual-subcompressed achenia, exactly as Ooclinium villosum, DC, 

 of PI. Sprucean. and Hostm. : the latter is perhaps identical with E. urticifolium, L. fil., 

 figured by Smith. 



2. Ooclinium rigidum, DC, has the 5-gonal achenium of Eupatorium, and would conse- 

 quently belong to C ampuloclinium, while C. surinamense, Miq. (Sch. Bip. ! in PI. Fockean.), 

 is Eup. Vitalbce, DC. 



§ 1. Cylindbocephala, DC. — Receptacle produced into a short cylinder between the in- 

 volucral scales, convex or fiat above them. Involucre cylindrical, many-serial: scales 

 oppressed, glabrescent. 



* Wholly glabrous species. 



23. E. rigidum, Sw.! Suffrutescent, glabrous; stem cylindrical; leaves opposite, 

 shortly petioled, rigid, ovate or ovate-lanceolate, acuminate, 3-Herved with impressed veins 

 above, densely dotted with glands beneath, remotely serrate: serratures 2-3 on each margin; 

 corymbs few-headed : heads many-flowered, pedicellate ; receptacle convex ; involucral scales 

 oblong, blunt, striate; achenium slightly muricate. — Ooclinium, DC. — 1'-2' high; leaves 

 18"' -8"', involucre 5 '"-6"' long; flowers violet; achenium 5-gonal, with equal sides. — Hab. 

 Jamaica !, Sw., in limestone hills of the northern districts. 



24. E. Ossseanum, DC. Shrubby, glabrous ; branches cylindrical; leaves opposite, 

 long-petioled, rigid, ovate-lanceolate, acuminate with a bluntish point, 3-nerved with im- 

 pressed veins above, densely dotted with glands beneath, coarsely cartilaginous-serrate 

 above the subcuneate base; corymbs trichotomous ; heads many-flowered, ultimate ter- 

 nately sessile ; receptacle fiat ; involucral scales ovate-oblong, bluntish or blunt, subestriate; 

 achenium glabrous. — Allied to the preceding, and perhaps still more to E. macranthum, Sw., 

 of Martinique, said to be distinguished by 6"'-long involucres. Leaves 3"-2", involucre 3'" 

 long. — Hab. S. Vincent!, Guild.; [Cuba]. 



25. E. punctatum, Lam. Shrubby, glabrous; branches slightly obtuse-angled, or 

 striate; leaves opposite, petioled, ovate or ovate-lanceolate, acuminate, triplinerved, densely 

 dotted with glands beneath, serrate ; corymbs compound : heads 10-20-flowered, pedicellate ; 

 receptacle flat ; involucral scales ovate-oblong, blunt, striate; achenium glabrous. — Leaves 

 3"-2", involucre 4'" long.— Hab. Trinidad !, Sieb. Tr. 75 ; [Guadeloupe !]. 



26. E. lsevigatum, Lam. Shrubby, glabrous ; branches striate-angular ; leaves op- 

 posite, petioled, ovate (or ovate-lanceolate), pointed, Z-nerved, dotted beneath with minute, 

 somewhat distant glands, serrate ; corymbs compound : heads 10-20-flowered, pedicellate, 

 (or ultimate sometimes subsessile) ; receptacle convex ; involucral scales ovate, and ovate- 

 oblong, blunt, striate, innermos' bluntish ; achenium slightly scabrous on the angles. — Miq. 

 Surin. t. 54.— E. psiadiajfoliutu, DC. in S. Sook., 0, Miq. ! — Leaves 4"-2", involucre 4'" 

 l on g_ Hab. Trinidad !, Lockh., Cr., common in savannahs ; [Panama, Gniana !, Brazil !]. 



27. E. impetiolare, Gr. (n. sp.). Shrubby, glabrous; branches cylindrical; leave* 

 opposite, sessile, elliptical-oblong or lanceolate-oblong, bluntly acuminate, bluntish at the 



