Definition of "parenchymatous"
(botany) Consisting of or relating to the cellular tissue making up the softer parts of leaves, pulp of fruits, bark and pith of stems, etc.
Quotations
The great fertility of the Cotton-plant in these fine flexile threads, whilst those from Flax, Hemp, and Nettles, or from the bark of the Mulberry-tree, require a previous putrefaction of the parenchymatous substance, and much mechanical labour, and afterwards bleaching, renders this plant of great importance to the world.
1789, Erasmus Darwin, The Loves of the Plants, J. Johnson, page 57