Displaying 1 - 20 out of 159 Object(s)
| Term | Definition | |
|---|---|---|
| Acanthophyll | A spine derived from a modified leaf or leaflet; e.g, in |
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| Alternate leaves | Referring to leaves that arise from an axis singly at each node, the leaves can be either simple or compound. Compare with opposite and whorled. | |
| Anadromous | Referring to a venation pattern in which the first vein in a given segment arises on the side of the leaf segment toward the apex. |  |
| Anisophylly (anisophyllous) | With two leaves of a pair differing in shape and/ or size; this is relatively common in species of Melastomataceae.. |  |
| Bifoliolate | Referring to a compound leaf with two leaflets. | |
| Bipinnate, bipinnately compound | Twice-pinnate; e.g., leaves of many species of Fabaceae-Mimosaceae. See pinnate. |  |
| Biternate | Twice ternate, in two groups of three each; e.g., the leaves of some species of Serjania (Sapindaceae). | |
| Catadromous | Referring to a venation pattern in which the first vein in a given segment arises on the side of the leaf segment toward the base. | |
| Collective vein | A vein running along the leaf margin, such as in many species of Anthurium (Araceae). | |
| Compound leaf | Referring to a leaf which is divided into smaller units; i.e., leaflets. Opposite of simple. | |
| Contraligule | In Cyperaceae, a projection at the summit of the leaf sheath opposite the insertion of the leaf blade. |  |
| Decussate leaves | Referring to opposite leaves arranged with each succeeding pair at right angles to the pairs below and above them. |  |
| Estipulate | Without stipules. Same as exstipulate. | |
| Even-pinnate leaf | Pinnately compound leaf with an even number of leaflets; i.e., without a terminal leaflet. Same as parapinnate. |  |
| Exmedial | Away from the leaf axis. |  |
| Exstipulate | Without stipules. Same as estipulate. | |
| Foliolate | With leaflets; e.g., 3-foliolate or trifoliolate is a leaf with three leaflets. |  |
| Free nervation | Leaf veins that do not unite to form a network. Compare with anastomosing and reticulate. | |
| Heterophylly (heterophyllous) | Referring to species or individuals with leaves that differ in size or shape. See heteromorphic. |  |
| Higher order venation | All venation smaller in diameter than tertiary venation. |  |