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Term Definition
Decurrent Extending down and adnate to an axis; e.g., the blade of a leaf onto the petiole, the leaf blade onto the stem, or the secondary veins onto the midvein in some species of Anacardiaceae, Lauraceae, and Monimiaceae.
Leaf base decurrent Referring to a leaf blade base that extends down the petiole. Leaf blade bases. Drawing by M. Manisha.
Secondary vein decurrent Referring to a secondary vein that curves downward along the midrib. Venation of Allantoma lineata. Photo by S. A. Mori.