Dictionary Involute

Involute [ Botany ]	Dictionary of botanic terminology - index of names

With margins rolled inward toward the upper surface.
E.g. petals and leaves in bud.

Involute means curved towards the midvein on the upper surfaces of a petal or leaf, along its longitudinal axis.
When fully involute the margins touch or overlap so only the reverse of the floret is visible.
Sufficient involution will create a tubular petal which may be referred to as Fully Involute or Quilled.

Left: fully involute petals of a dahlia flower.

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