Matelea sp.
Botanical names: Matelea cyclophylla, Gonolobus cyclophyllus
Common name: Matelea
Family: Asclepiadaceae
Origin: Mexico
Deciduous caudiciform vine. The caudex can grow to 20 centimetres, the vines can reach two metres. The flowers are 1 inch in diameter (2.5 cm) brown and, as many other asclepiads that use flies as pollinators, smelling like carrion.
Regular water when in leaf, very little water for the several months it is dormant.
Link to this plant:
https://toptropicals.com/catalog/uid/matelea_cyclophylla.htm