sacculate
/ˈsækkyəˌleɪt/ or /ˈsækkyəˌleɪt/Definitions
1. verb
to make a sacculus, or to form into a pouch or sac
“The plant sacculates its leaves to conserve water.”
2. noun
a pouch or sac, especially one formed by the sacculating of a leaf or other organ
“The sacculate structure of the plant allows it to retain water.”