dichotomous venation

dichotomous venation

[dī‚käd·ə·məs ve′nā·shən]
(botany)
A vascular arrangement in leaves such that the veins are forked, with each vein dividing at intervals into smaller veins of approximately equal size.
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References in periodicals archive ?
The groups of terminal cauloids, however, became dorsiventral in symmetry; the cauloids within each cluster fused together, thus forming a flat plate or leaf blade in which the existence of the constituent cauloids was indicated only by the dichotomous venation.
In the simplest cases the phylloids became united by the development of parenchymatous tissues betwen them, thus forming a foliar appendage with open dichotomous venation.