Having the edges rolled with the adaxial side outward.
Turned inward at the margin, like the exterior lip of the shells of species in genus Cypraea.
Difficult to understand; complicated.
Having a complex pattern of coils in which younger whorls only partly surround older ones.
Rolled inward spirally.
To roll or curl inwards.
A curve that cuts all tangents of another curve at right angles; traced by a point on a string that unwinds from a curved object.
Having two opposite leaves, each with one edge overlapping the nearest edge of the other.
Having a circle of several leaves or petals which overlap in that manner.
overlapping; contorted; convoluted