How many letters does the top answer for “having three leaves; three-leaved.” have?

The most common answer is triphyllous (11 letters).

Crossword clue: having three leaves; three-leaved.

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

triphyllous 11 letters web-def

Having three leaves; three-leaved.

having two leaves; two-leaved. 60% similar → bifoliate

four-leaved; having the leaves in whorls of four. 50% similar → quadrifoil, quadrifoliate

having three sepals, or calyx leaves. 50% similar → triseralous