Displaying 21 - 33 out of 33 Object(s)
| Term | Definition | |
|---|---|---|
| Leaf venation reticulodromous | Referring to a leaf venation type in which the secondary veins form a network of veins soon after departing from the midrib. Based on Hickey, 1973. For more information about leaf venation see Ellis et al, 2009. |  |
| Leaf venation simple craspedodromous | Referring to a type of leaf venation in which all of the secondary veins terminate at the leaf margins. |  |
| Leaf venation suprabasal acrodromous | Referring to a type of leaf venation in which two or more primary or strongly developed secondary veins arch upward from above the base. Based on Hickey, 1973. For more information about leaf venation see Ellis et al, 2009. |  |
| Leaf venation suprabasal actinodromous | Referring to a type of leaf venation in which three or more primary veins diverge radially from a single point above the point of attachment of the petiole. |  |
| Parallel venation | Generally applied to secondary or higher-order veins that are parallel to each other and to the margins of the leaf, sepal, or petal in which they occur but in monocots they are often numerous primary veins of the same size. |  |
| Percurrent tertiary venation | Tertiaries from the opposite secondaries joining (Hickey, 1973) |  |
| Pinnate venation | A type of venation pattern in which the secondary veins run parallel to each other from the midrib toward the margin. |  |
| Primary venation | The largest (in diameter) vein (e.g., in camptodromous venaton) or veins (e.g., in actindodromous venaton) in a leaf blade. Same as midrib. |  |
| Reticulate tertiary venation | Tertiary venation anastomosing with other tertiary veins or with the secondary veins (Hickey, 1973) |  |
| Reticulate venation | Referring to the venation of a leaf which forms a network. |  |
| Secondary venation | The second order of venation in a leaf blade, i.e., the veins that arise from the midrib. | |
| Tertiary venation | The third degree or third smallest veins in a leaf blade, arising from the secondary veins. | |
| Venation | The network or pattern of vascular tissue (veins) in a leaf or other organ. |