Northern Ontario Plant Database
- Entire - a smooth margin with no indentations or incisions.
- Crenate - margins with shallow rounded or blunt teeth.
- Serrate - margins with pointed teeth directed forward, towards the apex of the leaf.
- Crenulate - margins with small rounded or blunt teeth, diminutive of crenate.
- Dentate - margins with pointed teeth directed outward, perpendicular to the midrib.
- Double serrate - coarsely serrate margin with smaller teeth on the margins of larger teeth.
- Denticulate - margins with small pointed teeth directed outward, perpendicular to the midrib, diminutive of dentate.
- Broad-crenate - margins with widely spaced, rounded or blunt teeth, e.g., many violets (Viola, Violaceae).
- Serrulate - margins with small pointed teeth directed forward, towards the apex of the leaf, diminutive of serrate.
- Erose - with margins appearing gnawed, indentations shallow and irregular.
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