Not an accepted name (status: unknown).
The accepted name is
Ipomoea bracteata Cav., 1799.
Ipomoea bracteata var. viridibracta
A.McDonald, 1989
2% complete
No common name
Brenesia 28: 60 (1987 publ. 1989)
There is no corrections for Ipomoea bracteata var. viridibracta yet.