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interfoliaceous

American  
[in-ter-foh-lee-ey-shuhs] / ˌɪn tərˌfoʊ liˈeɪ ʃəs /
Also interfoliar

adjective

Botany.
  1. situated between leaves, especially opposite leaves.


Etymology

Origin of interfoliaceous

First recorded in 1750–60; inter- + foliaceous