Cryptostegia
noun
Cryp·to·ste·gia
ˌkriptəˈstējēə
: a genus of chiefly tropical African woody vines (family Asclepiadaceae) that have large polished leaves and funnel-shaped flowers and are important as a source of rubber see india-rubber vine
Word History
Etymology
New Latin, from crypt- + Greek stegē roof + New Latin -ia; from the concealment of the corona within the tube of the corolla; akin to Greek stegein to cover