
Appearance
Coastal jack-bean is a trailing, herbaceous vine that forms mats of foliage. Stems reach a length of more than 6 m and 2.5 cm in thickness. Each compound leaf is made up of three leaflets 5.1–7.6 cm in diameter, which will fold themselves when exposed to hot sunlight. The flowers are purplish pink and 5.1 cm long. The flat pods are 10.2–15.2 cm long and become prominently ridged as they mature. The buoyancy of the seeds allows them to be distributed by ocean currents. The plant seems to contain L-Betonicine.
Habitat
''C. rosea'' inhabits upper beaches, cliffs, and dunes throughout the world's coastal tropics. It is highly salt-tolerant and prefers sandy soils.References:
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