Cadia purpurea

Cadia is an ornamental shrub from Eastern Africa and Arabia, at 500-2100 m asl. It has graceful arching branches with pinnate leaves and bell-shaped flowers that change their colour while they age. They start with a pale cream colour and then turn pink and eventually purple. Cadia purpurea usually gets only 1-2  m tall but with time it can easily reach 4 or more meters if the climate is fine.

Cadia is in the pea family but it is evolutionarily unusual in having bell-shaped flowers. All its relatives have bilateral symmetry and Cadia has gone back (or forward?) to a radial symmetry.

Pictures from Wikimedia:

Drawing in colour: Autor: P.J. Redouté – Cadia Purpurea Tree. Spaendoncea tamarindifolia. Choix des plus belles Find fleurs -et des plus beaux fruits par P.J. Redouté. (1833), Volné dílo, https://commons.wikimedia.org/w/index.php?curid=58424494

Drawing in B/W: De Paul Hermann Wilhelm Taubert (1862-1897) - Leguminosae. inEngelmann (ed.): Natürliche Pflanzenfamilien. Vol. III, 3., Dominio público, https://commons.wikimedia.org/w/index.php?curid=852635