Adenia

4 species Passifloraceae

Morphological Summary

Genus of caudiciform and climbing plants in the Passifloraceae family, distributed across tropical Africa, Madagascar, and Southeast Asia. Species develop large globose or columnar basal caudices that store water and nutrients, enabling survival through prolonged droughts. Foliage is deciduous or semi-deciduous; all parts contain toxic cyanogenic glycosides. Highly valued in succulent and caudex bonsai collecting.

Distribution Tropical and subtropical Africa, Madagascar, Socotra, Southeast Asia to northern Australia.

Conservation Several species threatened by wild overcollection and habitat loss; A. glauca vulnerable in parts of its range.

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