Upper septum
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Title
Upper septum
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Definition
In neotropical Lecythidaceae, the part of a wall-like partition of a locule located above an articulation (often only seen as a thin line), as seen in longitudinal section, that divides the septum into a lower part and an upper part.
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Notes
In neotropical Lecythidaceae, the septa, as viewed in a medial longitudinal section of the ovary, are articulate. That part of the septum above the articulation is called the upper septum and that part below is called the lower septum. The placentae arise from the the lower septum. In indehiscent dehiscent fruited Lecythidaceae the upper septum and it is especially developed in cylindric- fruits species of the genera Cariniana, Allantoma, and Couratari. In this genera, the operculum and the columella are tack-shaped.
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Related Terms
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