334 synantherej:. 



9. V. rigida, Sw. I Shrubby j leaves rigid, shining above, oval or lanceolate-oblong, 

 bluntish, concolor, hispidulous-scabrous or glabrescent ; cymes scorpioid, leafy, flexuose : 

 heads much ^distant, subsessile or shortly pedicellate, single or geminate, usually much ex- 

 ceeded by the floral leaves; interior involacral scales oblong-lanceolate, blunt or bluntish, 

 exterior ovate ; achenium hairy or glabrate : pappus straw-coloured. — V. fruticosa, Sw. : 

 ex ic. Plum. Ed. Burnt, t. 95./. 1. V. Sagrseana, DC: the longer-leaved form. V. 

 emarginata, Wickstr. sec. Less. Heads 4'" long •. scales of the involucre at length spread- 

 ing. — Hab. Jamaica!,^., Wils., in the northern limestone hills ; [Cuba!]. 



10. V. tricholepis, DC. {ex descr.). Suffrutescent ; leaves elliptical-oblong or lan- 

 ceolate, pointed, scabrous above, villous beneath, subsessile ; cymes virgate, flexuose, leafy, 

 or passing into branches with axillary heads : heads much exceeded by the leaves, sessile ; 

 interior involucral scales lanceolate, acuminate, equalling the pappus, exterior setaceous ; 

 achenium shortly linear-turbinate, hairy : pappus white. — Our plant approaches V. gracilis, 

 Kth., which has more distant heads, longer leaves, an exserted pappus, and a somewhat differ- 

 ent involucre. Heads 2'" long.— Hab. Jamaica!, Pd.; Trinidad!, Or.; [Guiana, Bahia]. 



4. CENTRATHERTJM, Cass. 



Head discoid. Involucre imbricate, exceeded by approximate floral leaves. Receptacle 

 naked. Corolla 5-fid. Achenium obovate-oblong, costate : pappus caducous, of 1-serial, 

 unequal, rigid bristles. — Suffrutescent herbs ; leaves serrate, glandular ; heads single, long ■- 

 peduncled : flowers purplish-blue. 



11. C. muticum, Less. Perennial; leaves spathulate -oblong, unequally serrate, hairy 

 with scattered flexuose down ; interior involucral scales oblong, mucronulate-blunt, ciliate, 

 exterior descrescent, ovate. — Kth. N. Gen. 4. t. 315. — Ampherephis, Kth. — Stem 2'-3' high : 

 peduncles terminal, 4"-6" long ; headi 8'" diam. — Hab. Trinidad !, Cr., S. Anns, among 

 grasses; [Venezuela, Guiana]. 



5. MONANTHEMTJM, Gr. (n. gen.). 



Head 1-flowered. Involucre ovate-oblong, imbricate : superior scales longer. Corolla 

 5-fid. Anthers 2-tailed at their base. Style of Vernonia. Achenium clavate, glabrous : 

 pappus 1-serial, pilose, of many setaceous, slightly scabrous bristles. — A shrub or tree ; leaves 

 alternate, entire, glabrous above, Loary -silvery beneath with oppressed down ; heads ebrac- 

 teate, in many-lobed, contracted, axillary and terminal panicles : flowers purple. 



12. M. Cruegerii, Gr. Branches cylindrical, hoary-puberulous ; leaves petioled, ob- 

 long, bluntish, 5"-3" long, 2"-8"' broad, eglandular, rigid, reticulated with prominulous 

 veins on both sides, lepidote-tomentose beneath and on the petioles ; panicles peduncled, 

 6"-2" long, racemiform : heads subsessile or shortly pedicellate, 2"'-3'" long : pedicels tomeu- 

 tose ; involucre terete, tapering above : scales villous on the back below the point, inferior 

 ovate, blunt, V" long, rather abruptly passing into the ovate-oblong, bluntly acuminate su- 

 perior ones; receptacle minute, naked; pappus white or slightly tinged, equalling the slen- 

 der, glabrescent corolla, 2"'-3'" long ; anther-tails sharply acuminate, somewhat shorter than 

 the glabrous filaments ; style slender, hispidulous above, equal : hispidulous branches linear- 

 acuminate, subterete ; achenium slightly costate, tapering towards the base, somewhat shorter 

 than the pappus. Hab. Trinidad !, Cr. ; at Carais, Chacochacacco. 



6. ELEPHANTOPUS, L. 



Heads few-flowered, discoid, aggregated into glomerules. Special involucre distichous, 

 compressed •. scales alternately conduplicatc. Receptacle naked. Corolla unequally 5-fid. 

 Achenium clavate, costate : pappus 1-2-serial, of scaly bristles, dilated at the base. — Peren- 

 nial herbs; glomerules many-headed, supported by a general involucre, in panicles or spikes: 

 flowers violet-purple {or white). 



Sect. 1. Euelevhantopus, Endl. — Pappus '[-serial, of 5 (-8) bristles.— Glomerules 

 peduncled, distant, in loose corymbs. 



13. E. scaber, L., T. Gr. Stem nearly naked below the inflorescence ; rosulate leaves 



