In botany, a capsule is a type of simple, dry, though rarely fleshy dehiscent fruit produced by many species of angiosperms.
Lilium candidum dehiscing
Flowers and developing fruit capsules of the ground orchid Spathoglottis plicata
Dehiscence of the follicular capsule of Asclepias syriaca
Dehiscence is the splitting of a mature plant structure along a built-in line of weakness to release its contents. This is common among fruits, anthers and sporangia. Sometimes this involves the complete detachment of a part. Structures that open in this way are said to be dehiscent. Structures that do not open in this way are called indehiscent, and rely on other mechanisms such as decay or predation to release the contents.
Dehiscence of the follicular fruit of milkweed (Asclepias syriaca) revealing seeds within
Septicidal dehiscence. The septa between the locules of Ledum palustre capsules split as the fruit opens, and the seeds are released.
Loculicidal dehiscence. The locules of Lagerstroemia capsules split as the fruit opens, and the septa remain intact.
Loculicidal dehiscence in Peganum harmala