864 fl^AKT.'IERE^. 



pappus pole-rusty. — Hab. Jamaica !, Mcu^., Pd., Westmoreland ; S. Lucia ^&».) j [Gua- 

 deloupe I]. 



tt Beads pedicellate, or the central only sessile : Iractlet at the lose of the involucre, 



or wanting. 



60. Iffl. rotunda, Gr. («. ^.). Stem scaudeut, glabrous, striate-cylindrical ; leaves 

 rigid, oval-roundish, shortly apiculate, quite entire, trifUnerved, with the nerves prominent- 

 beneath, and a delicate, suprabasilar pair, glabrous, eglandular ; corymbs trichotomous, in 

 axillary, loose panicles : peduncles puberulous : pedicels ternate. Utile shorter than the head; 

 bractlet lanceolate-linear, one-third as long as the involucre, or wanting ; involucral scales 

 oblong-linear, blimt, substriate, glabrous ; corolla subclavate : limb cylindrical, as long as 

 the tiibe, 5-toothed with deltoid teeth ; achenium glabrous. — A stout climber ; leaves 4''-3" 

 long, 3"-3i" broad : petiole 8"'-10"' long ; panicles 6" long, expanded ; corymbs 2"-l V' 

 broad: lateral pedicels 2"', central l"'-l4"' long; ^volucre 3'" long; pappus tawny- 

 whitish. — Hab. Trinidad!, Cr., at Tocuche. 



^ 61. M. gonoclada, DC. Stem twining, angular, pubescent; leaves deltoid, broadly 

 cordate, or subcordate at the base, h -nerved, irregularly dentate or subentire, pubescent 

 beneath (or glabrescent), inferior as long as the petiole, superior often ovate ; corymbs pa- • 

 niculate, special ones contracted : peduncles villous-pubescent : pedicels temate, muchshdrter 



' than the head : bractlet lanceolate or elliptical-lanceolate, acuminate, half as loH^as the 

 involucre ; involucral scales oblong, substriate, bluntish or pointed, pubescent ; corolla-limb 

 &-fid, eamparmlate, as long as the tube; achenium glabrous. — M. surinamensia, Miq.l : a 

 form with glabrescent, pointed involucral scales. ^M. Guaco, Desc. (Ft. 3. t. 197): the 

 figure combines the inflorescence of this species with the uninerved leaves of M. Ouaeo, 

 Bonpl. — Leaves 4"-2" diam. ; involucre 3"' longj pappus pale-rusty. — Hab. Jamaica!, 

 Maif., Pd., Al., Wils., March ; [Cuba ! and Mexico, I to ^iana ! and Brazil]. 



62. M. orinocensis, Kih. Stem twining, glabrescent, striate-cylindrical, slightly 

 angular above ; leaves membranaoeous, cordate with a deeip sinus, pointleted or acuminate, 

 h-nerved, dentate or subsiuuate-repand, glabrescent ; special corymbs usually umbellate : 

 peduncles angular, slightly winged at the base, glabresoept : pedicels S{-5)-nate, usually 

 shorter, often much shorter than the head : bractlet landeolate, about half as long as the 

 involucre; involucral scales oblong or elliptical-oblong, blunt or mucronate, glabrescent, 



.,' striate; corolla-limb campanulaie, nearly as long as the tiibe, h-toothed with deltoid teetl; 

 achenium .glandular. — M. umbellifera, Oardn. I M. Siebekaua, DC. ' M. suaveolens, Kth. 

 (compared by Dr. Alexander in the British Museum) : a pubescent form. M. atriplicifolia, 

 Schults Bip.l : a form with longer, excrescent bractlets. M.' deltoidea, Pospp.! : small- 

 leaved specimens. — Leaves 3"-2" long; sinus often oblong, or deltoid, and obsolete in the 

 upper leaves ; involucre 2'" long ; pappus psile-rusty. The determination of this species rests 

 chiefly upon Seemann's Panama specimens, compared by Steetz with Humboldt's plant j of 

 allied species M. alata, DC. {Kleinia, Mey. I, M. scandens, PI. Spruce!) has a 5-fid corolla-, 

 limb, and larger, acute involucral scales, M. scandens, W. (of the United States) a clavate, 

 B-toothed corolla, and narrow, acute scales. — HabI Jamaica I, Pd., M., March ; S. Vincent !, 

 Guild.; Trinidad!, Lockh., Sch., Pd., Or., common in moist places, along i?oadsides; ■ 

 [Cuba I, Mexico ! to Ecuador !, Guiana ! to Brazil]. •*• 



Series 3. Asteroidese. — Style-branches in the perfect or S flowers flat, tapering beyond 

 the stigmaiic lines into a lanceolate 'or deltoid appendage, which is hairy on the out- 

 side (or reduced).— Lemea alternate ; pappus pilose in the West Indian genera. 



16. EKIGERON, L. 

 Head radiate : the ray-flowers ? , numerous, the disk wholly or partly hermaphrodite. 

 Involucre few-l-serial. Receptacle naked. Anthers tailless. Achenium compressed t 

 pappus pilose. — Eerbs ; ts,'^ purplish or white. 



Sect. 1. CffiNoius, Nutt.— Say-flowers shortly or not erserfed. Achenium Z-nerved: 

 pappus l-serial. — Root annual. 

 ♦ Seads corymbose or solitary. 



63. E. iamaicensis, Ste. Puberulous, glabrescent; stems ascending, few-1-headed, 



