With the possible exception of Kadsura japonica (magnolia vine), Kadsura is poorly known in cultivation. Evergreen twining lianas (woody climbers), they are closely related to Schisandra, a genus of mostly deciduous vining species from Asia (one species in the SE USA). Both genera produce unisexual flowers, usually on different plants, with the females exhibiting separate carpels spirally arranged on a conical torus (floral axis). Once fertilized, each carpel expands to become a spherical berry and the torus expands, elongating into a spike in Schisandra or becoming globose as in Kadsura.
Kadsuras are strictly Asian and Kadsura interior is known only from SW Yunnan and NE Myanmar (Burma). This species differs from the related Kadsura heteroclita (Roxburgh) Craib by its softball-sized fruits covered with up to 70 glossy, red berries (Kadsura heteroclita produces smaller walnut-sized fruits with fewer berries). We have only the one plant, derived from seed collected by Peter Wharton (curator of the David C. Lam Asian Garden [in 2005]) from a venerable 25m specimen growing at 2200m on Qiqi Mountain, Gongshan County, Yunnan. Although this species is monoecious (both male and female flowers are produced on the same plant), production of its extraordinary fruits is not assured as pollen may be released when stigmas are not receptive. Dichogamy (the maturation of male and female organs at different times, thus effectively preventing self-polination) is a common feature in monoecious plants. In protandrous plants (anther release prior to stigma receptiveness), sufficient pollen can be collected and stored until pollination can be effected; however, this species appears to be protogynous (our first flowers are clearly female).