pericarp
noun
peri·carp ˈper-ə-ˌkärp 
plural pericarps
: the ripened and variously modified walls of a plant ovary composed of an outer exocarp, middle mesocarp, and inner endocarp layer see endocarp illustration
Example Sentences
Recent Examples on the Web And of the proteins in the sample, 13 are found only in einkorn’s genus, mostly in the inner contents and the outer layer, or pericarp, of the seeds. 
Kiona N. Smith, Ars Technica, 13 July 2018
Kiona N. Smith, Ars Technica, 13 July 2018 Word History
Etymology
New Latin pericarpium, from Greek perikarpion pod, from peri- + -karpion -carp
First Known Use
1759, in the meaning defined above