| Name | Structure/ Category | Description |
|---|---|---|
| Lanceoloid | [Buds] {shape} ; [Seed cones] {shape before opening, shape when open} | Considerably longer than broad, rounded or somewhat flattened in cross section, broadest near the base and somewhat concavely tapering toward the tip; lance-head shaped in outline. |
| Lance-ovoid | [Buds] {shape} ; [Seed cones] {shape before opening, shape when open} | Intermediate in shape between lanceoloid and ovoid. |
| Latex | a milky usu. white fluid of variable compostition that is usu. made up of various gum resins, fats, or waxes and often a complex mixture of other substances frequently including poisonous compounds, this is found in or produced by cells of plants especially of the Asclepiadaceae but also of the Apocynaceae, Sapotaceae, Euphorbiaceae, Moraceae, Papaveraceaea, , and Compositae. | |
| Leaf | A lateral outgrowth of a stem, usually green and photosynthetic, and often consisting of a stalk (petiole) and an expanded portion (blade); leaves may also be needle-like or scale-like in form. | |
| Leaf complexity | The division (or not) of a leaf into distinctly separate segments or leaflets; whether a leaf is simple or compound. | |
| Leaf insertion | The position of leaves as defined by the relative location of their points of attachment on the stem (e.g. alternate, opposite, whorled, etc.). | |
| Leaf scar | The scar remaining on a twig at the former place of attachment of a leaf, after the leaf has fallen. | |
| Leaf venation | The visible pattern of veins on a leaf. | |
| Leaflet | One of the separate, leaf-like segments of a compound leaf. | |
| Leathery | [Seed cone scales] {type} | Moderately thick, tough and pliable. |
