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
Having wavy indentation on its border or edge.
sinuous
Roughly the same height for most of its length, becoming much shallower and then curving back towards the stem before reaching the attachment point.
To advance in wavy or curvy manner, to bend, to curve, to wind in and out