1854 S. Thomson i. 23 Some plants, like the common nettle..have their leaf margins regularly saw-toothed.
1955 26 June x45 DDT is quite helpful in controlling leafhoppers, which brown and curl leaf margins in summer.
2009 T. N. Taylor et al. vii. 221/2 Veins often do not end at the leaf margin but bend back to fuse with other veins.