Amphicarpa bracteata (L.) Fern. - Hog Peanut
Family - Fabaceae
Stems - Twining, herbaceous, antrorse or spreading pubescent.
Leaves - Alternate, trifoliolate, petiolate. Stipules at base of petiole 3mm wide, 4mm long. Leaflets ovate to rhombic, variously pubescent to glabrous, entire, to 10cm long, often asymetrical at base, with tiny stipules at base of petiolules. Petiolule of center leaflet much longer than those of lateral leaflets.
Inflorescence - Pendant, axillary racemes.
Flowers - Chasmogamous flowers to 1.5cm long, papilionaceous. Corolla purplish to plain white. Stamens diadelphous. Calyx of 5 sepals united more than half there length, upper two sepals united for entire length creating a 4-lobed calyx to 5mm long.
Fruits - (Of chasmogamous flowers) - To 4cm long, flattened, with 3-4 seeds, oblong-linear. Fruits (of cleistogamous flowers) - 1 seeded, pyriform.
Flowering - August - October.
Habitat - Open woods, thickets, moist slopes.
Origin - Native to tropical America. Also cultivated.
Other info. - The fruits
produced from the upper flowers should not be eaten. The lower fruits, however,
are edible when cooked. The genus name means "two types(kinds) of fruit".
Photographs taken in Brown Summit, NC., 9-8-02.