This member of the Vitaceae family was described by Bernard M. Descoings in 1964. It is found on Madagascar, growing in a well drained soil with some water and some sum. The caudex can grow to 1,2 meters in diameter, the vines can reach for ten meters. The flowers are from cream coloured to yellow.
The genera name from the Greek kyphos; 'tumor' or,'hump' and stemma; 'garland' or 'crown'. The species name macrocarpum means 'big seeds'.

