IPA: /ɪnˈvɒl.jʊ.kər/
KK: /ɪnˈvɑl.jʊ.kər/
A group of leaf-like structures that surround or support a flower or cluster of flowers.
The involucre of the plant provided protection for the developing flowers.
Involucre → It is formed from "in-" (meaning in or within) and "volucer" (from Latin, meaning to fly). The word refers to something that envelops or surrounds, akin to how something can be wrapped or enclosed within a flying or surrounding structure.
Think of something being 'wrapped' or 'enclosed' ('in-') within a 'flying' or 'surrounding' structure ('volucer'). This helps you remember that 'involucre' means to envelop or surround.
No commonly confused words.