Webster's Revised Unabridged Dictionary · 1913

Ipomoa

Ipomoa (ip`o*mē"ȧ) , proper noun

[New Latin “Named, according to Linnaus, from Greek 'i`ps, 'ipo`s, a bindweed [which it is not], and "o`moios like.” Gray.]

(Botany) A genus of twining plants with showy monopetalous flowers, including the morning-glory, the sweet potato, and the cypress vine.
Named, according to Linnaus, from Gr. 'i`ps, 'ipo`s, a bindweed [which it is not], and "o`moios like. — Gray

Also: Ipomoea