This member of the Fabaceae was given this name by René Paul Raymond Capuron in 1968. It is found on Madagascar, growing in a well drained soil with some water and lots of sun. The flowers are white over yellow to pink, and it will grow to three to twelve meters and the stem can get 70 centimetres in diameter.
The genera name from Greek delos; 'evident' or 'conspicious' and Greek onyx; 'claw' for the long claw of the petals. The species named for its many flowers. A tree by Ori Fragman-Sapir, Powo.science.kew.org.

