Zehneria is a genus of approximately 35 species of climbing vines belonging to Cucurbitaceae, the cucumber and gourd family, within the order Cucurbitales. Members of the genus occur across a broad pantropical and subtropical range stretching from sub-Saharan Africa eastward through South and Southeast Asia to Australia and the islands of Oceania.
Plants in Zehneria are either monoecious (bearing separate male and female flowers on the same plant) or dioecious (flowers on separate plants). They may be annual or perennial in habit. The stems climb by means characteristic of cucurbits, and the leaves are simple, toothed (dentate), and typically palmately lobed. Inflorescences arise from leaf axils as racemes, with the small flowers usually clustered together, though occasionally produced singly. The fruit is fleshy, generally globe-shaped (globose) or ellipsoidal, and does not open at maturity (indehiscent). Seeds are obovate, compressed, and smooth-surfaced.
The genus was named in honour of Joseph Zehner, a botanical artist. Zehneria is placed in Cucurbitaceae alongside familiar genera such as Cucumis, Momordica, and Coccinia. Notable members include Zehneria scabra, widespread across Africa and Asia; Zehneria japonica, native to East and Southeast Asia; and Zehneria marlothii, found in southern Africa.
Etymology
The genus name Zehneria honours Joseph Zehner, a botanical artist. No further detail on Zehner or the date of dedication is provided in available sources.
Distribution
Zehneria comprises roughly 35 species distributed across a wide pantropical and subtropical belt, from sub-Saharan Africa eastward through South and Southeast Asia, reaching Australia and Oceania. Individual species vary considerably in their specific ranges within this broad arc.
Taxonomy Notes
Zehneria belongs to the family Cucurbitaceae (order Cucurbitales), the same family as cucumbers, melons, and gourds. GBIF records the genus as accepted but does not list a formal authorship string in its backbone; the genus encompasses approximately 35 described species.
