| Name | Structure/ Category | Description |
|---|---|---|
| Lorate | [Leaflets, Leaves, Petals, Phyllaries, Sepals] {shape} | Long and moderately narrow, flat in cross section, with sides more or less straight and parallel, often flexible and curving; strapshaped. |
| Lyrate | [Leaflets, Leaves] {shape} | Pinnately lobed, with a large, rounded terminal lobe and smaller lower lobes; lyre-shaped. |
| Marbled | [Leaf lower surface, Leaf upper surface] {color variegation} | A surface traversed by irregular veins of color, as a block of marble. |
| Margin | The edge, as in the edge of a leaf blade. | |
| Marginal | [Placentation] {type} | Attachment of ovules along one side of a simple ovary. |
| Mericarp | [Fruits] {type} | One of the segments of a schizocarp once it has split apart, often appearing to be a separate fruit; usually one-seeded and not splitting open at maturity (indehiscent); as the small, relatively hard-coated nutlets in the mint familiy (Lamiaceae) or the individual winged samaras of maples (Acer). |
| Mesic | of a habitat having or characterized by a moderate amount of moisture neither hydric not xeric; of a plant or flora mesophytic | |
| Midrib | A main or primary vein running lengthwise down the center of a leaf or leaf-like structure; a continuation of the leaf stalk (petiole); the midvein. | |
| Midvein | A main or primary vein running lengthwise down the center of a leaf or leaf-like structure; a continuation of the leaf stalk (petiole); the midrib. | |
| Moderately lobed | [Leaflets, Leaves, Petals, Sepals] {lobing} | With lobes that are cut approximately < to = the distance to the midrib or base. |
