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Multiple distinct, prominent veins originating from a common point at the base of the leaf, often found in palmately-lobed leaves. Pinnate here is a midvein or midrib and there secondary, smaller, veins branching to either side of the midvein.
Leaf Venation: pinnately veined, with secondary veins arising along length of a singe primary vein, the latter a midrib or midvein, the ultimate veins forming a fine reticulum. Palmate-netted Leaf Venation: Palmately veined, with four or more primary veins arising from a common basal point.
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The arrangement of veins in a leaf is called the venation pattern. Monocots and dicots differ in their patterns of venation (Figure 30.22). Monocots have parallel venation; the veins run in straight lines across the length of the leaf without converging at a point.
30 sty 2024 · In palmate leaf venation, there are several main veins of similar thickness that radiate from a single point at the base of the leaf (e.g. kukui leaf; Figure \(\PageIndex{7}\)). In eudicots, the branching pattern seen as the veins further divide into smaller veins resembles a net, so it is called reticulate (netted) venation.
17 gru 2021 · The arrangement of veins in a leaf is called the venation pattern; monocots have parallel venation, while dicots have reticulate venation. The arrangement of leaves on a stem is known as phyllotaxy; leaves can be classified as either alternate, spiral, opposite, or whorled.
18 kwi 2013 · High major VLA through palmate venation (multiple first-order veins) enables leaves to be larger and thinner, but with the advantages of being protected against disruption of the vein system, and with lower cost of petiole relative to leaf size
