Not an accepted name (status: unknown). The accepted name is Ipomoea plummerae A.Gray, 1886.

Ipomoea plummerae var. cupulata J.A.McDonald, 1995 2% complete

No common name

Harvard Pap. Bot. 6: 115 (1995)

There is no corrections for Ipomoea plummerae var. cupulata yet.