PERICARP

The walls of a ripened ovary or fruit, mostly consisting of three layers, the epicarp, mesocarp, and endocarp.
A membranous envelope around the cystocarp of red algae.
[…]As the pericarp advances to maturity, it either becomes dry or succulent.[…]
Source: http://www.dictionary.com/browse/pericarp (derived 23-3-2016)

See CABINET OF CURIOSITIES:
55, 64