CLAMMY GROUNDCHERRY, Physalis heterophylia Nees. 1, lower portion of plant; 2, upper portion of plant; 3, flower; 4, inflated calyx surrounding fruit; 5, seed. Perennial, reproducing by seeds and rootstocks. Stems hairy, erect at first but later branching to form a dense bush 1 to 3 feet (30 to 90 cm) tall. Leaves alternate, 2 to 3 inches (5 to 7.5 cm) long, oval with round-toothed edges, hairy. Flowers bell-shaped, 5-lobed, drooping, greenish-yellow with brown or purplish center, about 3/4 inch (19 mm) in diameter. Fruit round, berrylike, yellow, enclosed by inflated papery calyx. Seeds numerous, small, yellow, flattened, oval, about 1/16 inch (1.5 mm) in diameter. Found in cultivated fields, gardens, pastures, and meadows. Several similar species differing chiefly in growth habit, growth period, and degree of hairiness are found in the region.