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Capsule (fruit)

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– Origins and structure:
– Capsule is derived from a compound ovary.
– Capsule composed of two or more carpels.
Fruit classified based on number of locules in ovary.
– Locules contain ovules or seeds separated by septa.
Gynoecium locules may be equal to or less than carpels.

– Dehiscence:
– Capsules dehisce to release seeds.
– Indehiscent capsules include Adansonia digitata, Alphitonia, and Merciera.
– Types of dehiscence include loculicidal, septicidal, and circumscissile.
– Some capsules split into valves.
– Poricidal capsules dehisce through pores.

– Specialised capsules:
– Follicle derived from single carpel.
Legume splits along two sutures.
– Variants of legumes include loments and indehiscent legumes.
Schizocarp derived from compound ovary.
– Mericarp separates from ovary to form distinct locule unit.

– Nuts:
– Capsules often mislabeled as nuts.
– Capsules release seeds and split apart.
– Nuts are compound ovaries containing single seed and fruit.
– Nuts do not split.
– Example of mislabeled nuts include Brazil nut and Horse-chestnut.

– See also:
– Capsules are not nuts.
– Nuts do not release seeds.
Brazil nut capsule opens but does not release seeds.
– Seeds germinate inside Brazil nut capsule.
– Capsules and nuts have distinct characteristics.

Capsule (fruit) (Wikipedia)

In botany a capsule is a type of simple, dry, though rarely fleshy dehiscent fruit produced by many species of angiosperms (flowering plants).

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