Term:
Secondary vein
Secondary vein
Definition:
A secondary vein is the second thickest vein in a leaf which arise from the midrib (= primary vein) (Hickey, 1973).
A secondary vein is the second thickest vein in a leaf which arise from the midrib (= primary vein) (Hickey, 1973).
Notes:
In Lecythidaceae, the number of pairs of secondary veins is useful in classification. This is, however, related to leaf size and there is usually a great deal of overlap in closely related species.
In Lecythidaceae, the number of pairs of secondary veins is useful in classification. This is, however, related to leaf size and there is usually a great deal of overlap in closely related species.