Roxburghiaceae
A small natural order of twining or erect, half-shrubby plants, natives of tropical Asia and Australia, Japan, and Florida. Flowers herm-aphrodite, regular; perianth of four sub-equal, petaloid, biseriate, lobes or segments; stamens four, affixed at the base of the lobes or segments, or nearly hypogynous; filaments rather thick, free or connate in a ring at the base; peduncles axillary, filiform, one or loosely few-flowered, or densely many-flowered. Capsule at length two-valved. Leaves alternate or scattered, petiolate, three to many-nerved, with thick, parallel, transverse veinlets. The tuberous root of the species of Stemona is candied in India. Roxburghiaceae comprises only about eight species, which Bentham and Hooker classify under three genera: Croomia, Stemona, and Stichoneuron.