''Cryptostegia madagascariensis'' is a species of flowering plant in the family Apocynaceae. It is commonly known as purple rubber vine, is a woody- perennial vine that is native to western and northern Madagascar. It has also been introduced to several tropical and subtropical regions by man, including Puerto Rico and the Virgin Islands. It is very similar to the rubber vine ('' C. grandiflora''), which is also native to Madagascar. In their area of overlap some hybrids have been observed, which are distinguishable by intermediate flower morphology. In the 1930s a hybrid was also developed for horticultural purposes.

References

{{Taxonbar, from=Q15397864 Periplocoideae Endemic flora of Madagascar Taxa named by Wenceslas Bojer Taxa named by Joseph Decaisne Flora of the Madagascar dry deciduous forests Flora of the Madagascar succulent woodlands