L'lO C(»MI'aSIT-E. (COMPOSITK FAMILY.) 



2. B. frutescens, DC. Unmcln^s ami leaves lioary-tomeiitose ; leaves 

 var^'iug Iroiii sijululalu-liiicar to ohovatu-uliluiig, eutire, or toollied near llio 

 liiuio; si-alu8 uf the iuvoluc-ie sliortor tliaii the disk, tlic inner ouch and cliaft 

 of tlic receptacle si)ine-puiiited. — Saiiiio niar.shos, Florida to North Carolina. 

 June-Uct. — Stem 1^-2'' high. 



46. WEDELIA, .la.q. 



lU'ads niany-rtowered, radiate. J-'lower.s of tlie ray iii.-itiliate, of the disk 

 perfect, tul)iilar, 3-tootiied. Scales of the involucre in 2 -.3 rows, the outer 

 ones leafv, the inner niend)ranaceous. IJeceptacle convex, chaffy. Achenia 

 ohovate or compressed. Pappus caly.\-like, coiui)osed of united dentate and 

 ciliatc scales. — llerhs or undershruhs, with opposite serrate leaves, and mostly 

 solitary yellow Howers. 



1. W^. carnosa, Kich. Herbaceous, smooth, creepinj;;; leaves se.ssile, 

 thick, oljovate, sliglitly ."i-lohed ; heads axillary, peduncled ; outer scales of tlie 

 involucre oblonj^, as long as the disk, the inner oues smaller; achenia wing- 

 loss. — Springy places, Key Biscayne ( Cur/lss). 



47. MELANTHERA, IJohr. 



Heads many-flowered ; the flowers all tuhiilar and perfect, .5-cleft. Scales 

 of the involucre iml)ricated in 2 rows. Chaff of the conve.K receptacle rigid, 

 persistent, ])artly sheathing the flowers. Achenia 4-augled, short, truncate at 

 the apex. Pappus of 2-severiil rough rigid deciduous awns or hri.stles. — 

 Rough perennial herbs, with branching 3-4-angled stems, opposite undivided 

 or .3-lobed serrate petioled leaves, and scattered heads of white flowers, on 

 long ppduiiclcs. Anthers black. 



1. M. hastata, Michx. Stem commoidy spotted; leaves ovate, entire, 

 or more or less hastate-3-lobed, serrate ; scales of the involucre lanceolate, 

 acute; chaff of the receptacle spine-pointed. — Light rich soil, Florida to 

 South Carolina. August - Sept. — Stem :i° - 6^ high. 



2. M. deltoidea, Michx. Leaves deltoid-ovate, undivided ; scales of the 

 involucre ovate ; chaff of the receptacle obtuse, mucrouate. — South Florida. 



3. M. lanceolata, Benth. Leaves lanceolate, or narrower and ta])ering 

 from the ape.-i to the ba.se ; scales of the involucre oblong-lanceolate ; chaff 

 of the rece})tacle cuspidate. — Coast of South Florida. 



48. ZINNIA, L. 



Heails many-flowered ; the ray flowers ])istillate ; tho.se of the disk jjerfect, 

 tubular, with .5 velvety lol)es. Scales of the involucre imbricated, oval or 

 roundish, margined. Chaff of the conical receptacle da.sping the disk flowers. 

 Eav flowers oblong, rigid persistent. Achenia of the disk compressed, with 

 a 1 -2-awneil ])appus : of the -rays 3-angled, destitute of a pappus. — Annual 

 herbs, with se.ssile entire 3-ribbed leaves, and solitary hea l.s, mi long inflated 

 peduncles. 



