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Ipomoea tricolor
ALL species in the Tricolor Series have yellow in the throat...This doesn't,so, it is not Ipomoea tricolor,nor anything closely related to Ipomoea tricolor...
Time to update , only if you care enough about the entry...
The corolla is a ringer for Ipomoea hederacea and Ipomoea tricolor always has yellow in the tube and this does not...