Not an accepted name (status: unknown). The accepted name is Malus ioensis (Alph.Wood) Britton, 1897.

Malus ioensis var. palmeri Sarg., 1897 25% complete

No common name

Ill. Fl. N. U.S. 2: 235 (1897)

There is no corrections for Malus ioensis var. palmeri yet.