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1 Mature plants 1-4 m tall, compact or scandent shrubs to high-climbing vines, rarely rooting where stems touch the ground; the central stem 1.2-5.4 cm wide at the plant base, trunk-like and becoming much wider than distal stems; bark of older stems becoming light gray below newer green (rarely purplish) growth; leaves to 10 cm long and 4 cm wide, the petiole usually distinct and to 15 mm long, the secondary veins 3-6 on each side of the midrib, the secondary veins often relatively conspicuous on the upper surface and discolorous (whitish to yellow-green) from the green blade surface, reticulate veins sometimes apparent, the upper blade surface lustrous; peduncle, rachis, pedicel, and ovary green; peduncle 7-25 mm long, the peduncle+rachis 2-9 cm long; calyx and corolla (4) 5-merous; corolla yellow to whitish; [n. FL south to s. FL; also s. TX] | |
1 Mature plants 0.1-3.5 m tall, sprawling or procumbent subshrubs to vines, commonly rooting where stems touch the ground; the central stem 0.1-1 (-2) cm wide at the plant base, not much wider than distal portions of the stems; bark of older stems becoming dark purplish gray to gray-black below newer green to purplish growth or if gray then the mature plant <1 m tall; leaves to 6 cm long and 1.8 cm wide, the petiole often indistinct or to 4 mm long, the secondary veins unapparent or 1-3 on each side of the midrib and sometimes concolorous with the blade surface, reticulate veins usually unapparent, the upper blade surface dull; peduncle, rachis, pedicel, and ovary green to purplish; peduncle 2-10 mm long, the peduncle+rachis 0.5-4 cm long; calyx and corolla 4-5-merous; corolla yellow to purplish; [s. FL only]. | |
2 Plant 0.1-3.5 m tall; longer stems usually >1.5 m long; larger leaves >3 cm long, >13 mm wide, mostly 2.5-5 cm long; inflorescence peduncle+rachis 0.5-4 cm long; [hammocks, swamps, pinelands, and prairies] | |
2 Plant 0.1-0.5(-1) m tall; longer stems <1.5 m long; larger leaves <3.1(3.8) cm long, <13 mm wide, mostly 1-3 cm long; inflorescence peduncle+rachis 0.5-2 cm long; [pine rocklands] |