A phyllome lamina crena (PO:0025516) that is a rounded projection on a leaf margin (PO:0020128) for which the corresponding leaf sinus (PO:0025384) extends less than one quarter of the distance to the center of the long axis of the leaf lamina (PO:0020039). [source: JSTOR:2441319]
Comment
See leaf lamina tooth (PO:0025518) for a small angular projection. The corresponding leaf sinus may be rounded or angular.