25. Zehneria Endlicher, Prodr. Fl. Norfolk. 69. 1833.
马(瓜交)儿属 ma jiao er shu
Authors: Anmin Lu & Charles Jeffrey
Neoachmandra W. J. de Wilde & Duyfjes; Pilogyne Ecklon ex Schrader.
Herbs, climbing or trailing, annual or perennial. Leaves petiolate, unlobed or 3-5-lobed or -partite. Tendrils slender, simple. Plants monoecious or dioecious. Male flowers axillary, solitary or few, long pedicellate, or in a raceme-cyme or subumbel; calyx campanulate, 5-lobed; corolla campanulate, white or yellow-white, often becoming cream colored with age; segments 5; stamens 3, inserted at bottom or on upper part of tube; filaments shorter to longer than anthers; anthers all 2-celled or sometimes two 2-celled and one 1-celled, oblong or ovoid-oblong; anther cells straight or slightly curved; connective produced or not produced; rudimentary ovary variable in form. Female flowers solitary or paired or a few in a cyme, often coaxillary with male flowers; calyx and corolla as in male flowers; ovary globose to ellipsoid-fusiform, 3-locular; ovules few to numerous, horizontal; style surrounded at base by an annular disk; stigmas 3. Fruit globose or ellipsoid to fusiform, indehiscent. Seeds few to numerous, ovate, compressed, not sculptured.
About 55 species: Old World tropics; four species in China.