Monopetalous
Pronunciation : Mon`o*pet"al*ous
Part of Speech : a.
Etymology : [Mono- + petal: cf. F. monop?tale.] (Bot.)
Definition : Defn: Having only one petal, or the corolla in one piece, or composed of petals cohering so as to form a tube or bowl; gamopetalous.
Note: The most recent authors restrict this form to flowers having a solitary petal, as in species of Amorpha, and use gamopetalous for a corolla of several petals combined into one piece. See Illust. of Gamopetalous.
Source : Webster's Unabridged Dictionary, 1913