Not an accepted name (status: unknown). The accepted name is Ipomoea pauciflora M.Martens & Galeotti, 1845.

Ipomoea pauciflora subsp. vargasiana (O'Donell) McPherson, 1982 2% complete

No common name

Ann. Missouri Bot. Gard. 68: 537 (1981 publ. 1982)

There is no corrections for Ipomoea pauciflora subsp. vargasiana yet.