Akademik

capsule

noun /ˈkæpsəl/

a) A membranous envelope.

The epidermal cells of the capsule wall of Jubulopsis, with nodose "trigones" at the angles, are very reminiscent of what one finds in Frullania spp.

b) A type of simple, dehiscent, dry fruit (seed-case) produced by many species of flowering plants, such as poppy, lily, orchid, willow and cotton.

Wikipedia foundation.