aSupervolute(Bot) Having a plainted and convolute arrangement in the bud, as in the morning-glory.
Century Dictionary and Cyclopedia
supervoluteIn botany, noting a form of estivation in which the plaits of a gamopetalous corolla successively overlap one another, as in the morning-glory, jimson-weed, etc.: same as convolute except that the latter refers to petals instead of plaits; also, of a leaf, same as convolute.
Chambers's Twentieth Century Dictionary
adjSupervolutesū′pėr-vol-ūt (bot.) having a plaited or convolute arrangement in the bud.
Webster's Revised Unabridged Dictionary
L. supervolutus, p. p. of supervolvere, to roll over; super, over + volvere, to roll