Wild Pea-nut.Amphicarpæa monoica.
Common in rich, open woodlands and damp wayside tangles, usually blossoming in August and September.
A vine: climbing over low vegetation by aid of its slender, twining, green stem.
The 3 leaflets of the compound leaf are very broad across the middle, especially the middle one, which is almost diamond-shaped; the margin is entire, the surface almost smooth, and the texture exceedingly thin; at the juncture of the foot-stem with the blade, and with the main stem, are small gland-like swellings; the alternate leaves, on slender stems, are of a light yellowish-green.
The slender pea-shaped blossom is lavender-tinted, with a pale green 4- to 5-notched calyx; the flowers grow in groups of from 4 to 7, on the end of a short flower-stem, that springs from the angle of the leaf.
The flowers occasionally ripen pods about 1 inch long, holding from 3 to 4 brown-mottled, bean-like seeds. The vine is said also to form subterranean seeds from rudimentary flowers, the seed being enclosed in a fleshy, pear-shaped pod; this perhaps may have been thought a good reason for giving to a slender and well-behaved little vine the opprobrious folk-name of Hog-Pea-nut! But those who know its true character will never degrade it to so low a level!