eucamptodromous |
|
venation |
|
Having a single median primary vein that branches to either side along the length of the lamina, the secondary veins upwardly arcuate, gradually becoming indistinct interior to the margin, and serially interconnected by cross-branches without formation of marginal loops. |
craspedodromous, simple- |
|
venation |
|
Having a midvein that branches to either side along the length of the lamina, the secondary veins and their branches all running toward and terminating at the margin. |
parallelodromous |
|
venation |
|
Having two or more primary veins that run more or less parallel to one another over most of the laminar length and converge near the apex. |
one-veined |
= hyphodromous, single-veined |
venation |
|
Having one median, primary vein and no other venation externally evident. |
acrodromous |
|
venation |
|
Having two or more primary and/or strongly developed secondary veins that diverge at or above the laminar base and are thence convergently arcuate toward the apex, reaching it or not. |
simple-craspedodromous |
|
venation |
|
Having a midvein that branches to either side along the length of the lamina, the secondary veins and their branches all running toward and terminating at the margin. |
palinactinodromous |
|
venation |
|
Compound actinodromous, with higher-order branch radiations above the level of and similar to the primary one. |
brochidodromous |
|
venation |
|
Having a single median primary vein that branches to either side along its length, the secondary veins incurving strongly near but short of the margin, interconnecting serially, and forming a succession of marginal loops. |
semicraspedodromous |
|
venation |
|
Having a single median primary vein that branches to either side along the length of the lamina, each secondary vein running thence toward and bifurcate near the margin, one branch terminating at the margin, the other upwardly arcuate and merging with the superadjacent secondary vein, thus forming one of a series of marginal loops. |
obvolute 2 |
|
vernation |
|
Conduplicate with the lateral edges of each leaf alternately overlapping those of the oppositely oriented, distally next adjacent one. |
replicate |
|
vernation |
|
Each with the distal portion of its blade recurved, paralleling and contiguous with the proximal portion. |
circinate 2 |
|
vernation |
|
Having each leaf (frond) rolled adaxially from the sides and downward from the apex, forming a tight, flat coil; esp. in Polypodiophyta. |
involute 2 |
|
vernation |
|
Each rolled adaxially from the lateral margins. |
duplicate 2 |
= conduplicate |
vernation |
|
Each leaf folded sharply inward along its longitudinal axis, the adaxial surfaces of each side facing one another. |
contortuplicate 2 |
|
vernation |
|
Folded and twisted. |
plaited 2 |
= pleated, plicate |
vernation |
|
Having alternately adaxial and abaxial lengthwise folds, resembling a closed fan. |
convolute 3 |
|
vernation |
|
Each rolled laterally and wholly surrounded by and/or surrounding the one(s) next adjacent. |
supervolute |
|
vernation |
|
Each with one side rolled adaxially inward from the margin and enveloped by the abaxially rolled opposite side. |
revolute 2 |
|
vernation |
|
Each rolled abaxially inward from the lateral margins. |
pleated 2 |
= plaited, plicate |
vernation |
|
Having alternately adaxial and abaxial lengthwise folds, resembling a closed fan. |
conduplicate 2 |
= duplicate |
vernation |
|
Each leaf folded sharply inward along its longitudinal axis, the adaxial surfaces of each side facing one another. |
reclinate |
|
vernation |
|
Each with its blade oriented downward and parallel to the proximal portion of its distally recurved petiole. |
plicate 3 |
= plaited, pleated |
vernation |
|
Having alternately adaxial and abaxial lengthwise folds, resembling a closed fan. |