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Northern Ontario Plant Database |
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Leaf Shapes
The width of each basic leaf shapes can be described as narrowly- or widely-, depending on the degree of
modification from the standard shapes. Plants with leaves that have more than one shape are called heterophyllous.
| Linear |
long and narrow, with essentially parallel margins. |
| Lanceolate |
widest below the middle of the blade and 3 to 6 times as long as wide. |
| Ovate |
widest below the middle of the blade and about 1.5 to 2 as long as wide. |
| Elliptic |
widest at the middle of the blade, with curved margins and pointed apex and base. |
| Oblong |
rectangular, with nearly parallel margins, about 2 times as long as wide. |
| Oval |
widest at the middle of the blade, with curved margins and rounded apex and base. |
| Rhombic |
diamond-shaped, widest at the middle and with straight margins. |
| Deltoid |
triangular, shaped roughly like an equilateral triangle. |
| Oblanceolate |
reverse lanceolate, widest above the middle of the blade. |
| Spatulate |
spoon-shaped, basically oblanceolate, but with a narrow (attenuate) base. |
| Obovate |
reverse ovate, widest above the middle of the blade. |
| Orbicular |
circular, with rounded sides. |
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More Shapes >>
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