The following Moringa species are characterized by a massive, swollen, water-storing trunk and radially symmetrical (or nearly so) flowers. All of these species also have similar patterns of germination and ground tissue proliferation.
Moringa drouhardii (Madagascar)
Moringa hildebrandtii (Madagascar)
Moringa ovalifolia (Namibia and Angola)
Moringa stenopetala (Kenya and Ethiopia)
They were placed by Verdcourt together in a section of the
genus called Donaldsondia in 1985.
The following species of Moringa have an underground tuber when small, but turn into slender trees with age. All three of these species are have bilaterally symmetrical flowers:
Moringa concanensis (Pakistan, India, and Bangladesh)
Moringa oleifera (India)
Moringa peregrina (Israel to Somalia and southern Arabian Peninsula)
The eight Moringaspecies found in northeast Africa span the whole range of life form variation found in Moringa. All but M. peregrina are endemic to northeast Africa, that is, found nowhere else on earth:
Small tree with massive, fleshy roots
Tuberous shrub/ herb