362 SYNANTHERE^. 



drical to the middle: limb abruptly dilated, ovate at the base, deeply 5-fd iiito lanceolate, 

 acuminate segments ; achenium glandular. — SI. t. 151. /. 3.— This remarkable species, ap- 

 proaching in its corolla to several Mikania, cannot be separated generically from E. triste, 

 with which it was probably confounded by DC. Leaves thickish, 2£"-H" long, 10"'-8"' 

 broad : petiole 4'" long; corymbs l"-2" broad ; involucre nearly 3'" long; achenium linear, 

 tapering at the base. — Hab. Jamaica !, M'Nab. 



*** Stem herbaceous, annual. 



49. E. paniculatum, Schrad. Annual, herbaceous, glabrescent; leaves membrana- 

 ceous, petioled, deltoid, pointed, serrate above the cuneate or truncate base, 3-nerved, eglan- 

 dular or with minute, distant glands, opposite, the uppermost or all superior alternate ; co- 

 rymbs loose, paniculate : heads 15-25-flowercd, pedicellate ; involucral scales lanceolate, 

 bluntish, glabrous, striate, 2-serial, interior subequal, exterior about half as mauy, half as 

 lony ; achenium glabrous. — Colla in Act. Taurin. 33. 1. 8 : a rhomboid-leaved form. — E. 

 guadalupense, Spreng., and Mikania Berteriana, Spreng. E. Berterianum, Coll. E. urti- 

 cifolium, Hb. Bks. (non Sm.). — V-3' high ; involucre 1£'" long. — Hab. Jamaica!, all col- 

 lectors, a common weed ; Antigua !, Wullschl. ; Trinidad ; [Portorico !, Trench islands ! ; 

 Honduras, Venezuela !, Peru !, Brazil]. 



E. Ayapana, Vent. (Desc. Fl. 3. t. 203), an Eximbricate, with lanceolate, subsessile 

 leaves, is naturalized in the West Indies (S. Croix), and cultivated as a medical plant. 



14. CRITONIA, P. Br. 



Head discoid, 3-5-flowered. Involucre imbricate, cylindrical. Receptacle naked, minute, 

 convex. Corolla' clavate. Achenium shortly stipitate, 5-gonal with keels on the angles : 

 pappus pilose. — Shrubs ; leaves opposite, petioled, uninerved, dotted with pellucid points 

 and lines; heads usually glomerate-sessile, terminal on the branches of compound corymbs ; 

 flowers whitish. 



50. C. Dalea, DC. Glabrous ; leaves lanceolate (or elliptical -lanceolate), tapering at 

 both ends, serrate with small, often distant serratures ; panicle subfastigiate : heads 3-5- 

 nately sessile or subsessile, 4(-3-5)-flowered ; involucre 4-3-serial : scales striate, blunt, in- 

 terior oblong, middle gradually shorter, ovate, exterior very short : achenium hispidulous. — 

 Br. Jam. t. 34. f. 1. — Eupatorium, L. Calydermis jaraaicensis, Spreng. — 6-10' high, 

 odorous; leaves somewhat shining, 6"-3" long, 12"'-6'" (-18'") broad: petiole 4"'-3"', 

 involucre 3"'-2"' long. — Hab. Jamaica 1, Macf, Pd., in the mountains, S. Andrews, Man- 

 chester ; [Cuba !]. 



51. C. parviflora, DC. Branches and petioles pubescent; leaves ovate, elliptical, or 

 the superior elliptical-lanceolate, pointed, serrate with approximate, often mucronate serra- 

 tures; panicle large, pyramidal, expanded: heads 3— 7-nately sessile, 3-2 (-4) -flowered ; in- 

 volucre 3-4-serial : scales substriate, blunt, interior oblong, middle abruptly shorter, ovate, 

 exterior very short ; achenium slightly hispidulous, glabrescent. — Eupatorium, Sw.! — 10-16' 

 high, inodorous ; leaves not shinine;, variable, the largest 8" long, 4" broad, the superior 

 usually 4"-3" long, 2"-l" broad : petiole 12"'-4"', involucre 2'" long.— Hab. Jamaica !, all 

 collectors, common. 



52. C. macropoda, DC. " Glabrous ; leaves ovate-lanceolate, acuminate; panicle fas- 

 tigiate : heads shortly pedicellate, 3-5-nate, 5-flowered; involucral scales oblong, somewhat 

 pointed ; achenium hispidulous." — " Leaves 5"-7" long, 2" broad : petiole 1" long." — Hab. 

 Trinidad {Sieb.). 



15. MIKANIA, W. 



Head discoid, mostly 4-flowered. Involucre 1-serial, 4-leaved (or with an accessory 

 bractlet). Receptacle minute, naked. Corolla abruptly dilated above. Style with a gla- 

 brous, discoid tumour at the base. Achenium 5-gonal : pappus pilose. — The West Indian 

 species are shrubby vines : leaves opposite, petioled : petioles connected at the node ; heads 

 in paniculate spikes, racemes, or corymbs. 



* Heads in compound, elongated spikes, or racemes. 



53. M. hastata, W. Puberulous, glabrescent; stem twining, cylindrical; leaves 



