Growing within the fragmented dry forests of Madagascar, the rare Delonix leucantha subsp. leucantha displays a remarkable adaptation to arid conditions. This deciduous tree has evolved specialised storage tissues to cope with seasonal drought.
Due to its highly restricted distribution range, this subspecies is vulnerable to ongoing habitat loss. Conservation efforts are crucial to protect the remaining populations in their natural environments.
Reaching heights of up to 15 meters, this deciduous tree features a smooth, grey bark and a swollen, succulent trunk that stores water. The bipinnate leaves form a spreading crown that sheds during the dry season to prevent moisture loss.
The large, showy flowers emerge in clusters, featuring pure white petals when they first open. As the blossoms age, they undergo a color transition to pale yellow or light apricot. Long, slender stamens protrude prominently from the petals, attracting insect pollinators.
Following pollination, the tree develops elongated, woody seed pods. These pods turn dark brown as they mature and contain hard, elongated seeds that are released when the pod splits.
The scientific name leucantha translates from Greek as "white-flowered," highlighting the species' initial flower color. The distinct color change from white to yellow as the flowers mature is believed to signal to pollinators which flowers are receptive to pollination.
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