Cardiospermum (Greek, heart-seed, from the white heart-shaped spot on the round black seed; hence the plant was thought a cure for heart diseases). Sapindaceae. Tendril-climbing tropical herbs.
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Leaves alternate, biternate; lfts. coarsely serrate: fls. small, white, polygamous or dioecious, in axillary racemes or corymbs; sepals and petals 4, in pairs; stamens 8; ovary 3-celled, followed by a membranous caps. — A dozen species widely distributed. The most popular is the interesting balloon-vine, which is a rapid-growing, woody perennial, behaving as an annual, curious for its inflated seed-vessels. Fig. 793. Prop. by seeds.