Description: Throat white inside with gray at base, calyx lobes rounded and convex, without an apical tooth, appressed to corolla, peduncle not ridged or winged.
Elevation: 700-1100 m
Slope: both Atlantic and Pacific
Flower phenology: January to February
Comments: Larger than Ipomoea batatas and much less common; it occurs only in the lower end of I. batatas' range.
Corolla color: pink-lavender
Corolla throat color: pink-magenta