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Leaf margin

This refers to the margin of the leaf blade, or the leaflet blade in the case of compound leaves.

L17 smooth

The margin is neither toothed nor lobed but when the leaf blade is held horizontally at eye level waves may be apparent along the edge.

L18 toothed

Teeth are small lobes on the edge of the leaf blade and may be either sharp or rounded.

L19 lobed

Lobes are large projections or indentations on the blade margin.