350 ASCLKriADACK.K. (mII.KNVKKD KAMII.V.) 



9. AMPHISTELMA, (.liMl.. 



Calyx 5-parted. Cori)lla niiiuite, rotate; crown olittiscly ri-parteil. I'olleu- 

 massus ovoiil. Gynostegiuiii sessile, shorter tliaii ili<^ rmwu, tlai. Follicles 

 divaricate, liucar. Seeds comose. — A woody vine. 



1. A. filiforme, Griseb. Stems niuch-braniliicl, piihcsicnt in lines; 

 leaves thin, linear, sniootiii.sli ; uinliels nearly sessile, few-llowered ; calyx 

 lohes ovate ; corolla smooth, the spreading lobes lanceolate, oi)tuse ; crown 

 shorter than the gynostegium ; follicles very slender ; seeds linear, wingless. 

 — Dry ricii soil near the coast, Florida. — Leaves }/-l' long. Flowers green, 

 less than a line long. Follicles 1' long. 



10. PHILIBERTIA, HBK. 



Calyx 5-parted. Corolla wlieel-sliajied, o-parted. Crown double ; the ex- 

 terior forming a ring at the base of the corolla ; the interior longer, 5-leaved. 

 Stigma j)ointe<l, notched. Follicles .slender, smooth. Seeds como.se. — Erect 

 or twining herbs. Leaves often cordate. F'lowers yellow or white, in lateral 

 umliels. 



1. P. viminalis, Gray. Stem smooth and twining; leaves nearly ses- 

 sile, oblong, mucronate, rounded at the base; peduncles stout, 8 - 1 2-flowered, 

 2-3 times as long as the leaves and pedicels ; lobes of the corf)lla ovate, ob- 

 tuse, spreading ; the outer surface, like the calyx and pedicels, pubescent ; 

 leaves of the inner crown oval, rather exceeding the stigma and anthers. — 

 South Florida. — Leaves somewhat fleshy, 9" -12" long. Corolla 3" wide. 

 Ovary villous. 



11. GONOLOBUS, Michx. 



Calyx .5-parted, spreading. Corolla wheel-shaped, .5-parted, the lobes spread- 

 ing, twisted in the bud. Crown a wavy-lobed ring at the throat of the corolla. 

 Gynostegium flattened, depres.sed. Anthers opening transversely. Pollen- 

 masses horizontal. F'ollicles inflated, angled, and often armed with soft 

 spines. Seeds comose. — Twining herbs, w'ith opposite jietiolate cordate 

 leaves, and yellowish or purplish flowers, in lateral corynibs or umbels. 



» Follicles spineless, ribbed. 



1. G. macrophyllus, Michx. Hairy; leaves oblong-ovate, cordate, 

 abruptly acuminate ; umbels peduncled, several-flowered ; pedicels spreading, 

 unei]ual, shorter than the petioles; corolla dull purj^ish, conical in the bud ; 

 the lanceolate obtuse lobes more or less pubescent witliin, green at the apex ; 

 follicle strongly ribbed. — Low thickets. July -August. — Leaves 2' -6' 

 long. 



2. G. suberosus, R. Br. Leaves cordate, acuminate, minutely pubes- 

 cent or smootliish ; umbels 3 - 9-flowered, much shorter than the petiole; 

 corolla broadly conical in the bud, twisted, the lobes triangular-lanceolate, 

 dusky, miimtely pubescent within, but sometimes smooth, hardly double the 

 length of the calyx lobes; crown 10-crenate (Gray). — Near the coast, Vir- 

 ginia to Florida. 



