Crossword clue: the order or arrangement of leaves on the stem; the science of the relative position of leaves.

The most common answer is phyllotaxis (11 letters).

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

Possible answers

phyllotaxis 11 letters web-def

The order or arrangement of leaves on the stem; the science of the relative position of leaves.

phyllotaxy 10 letters web-def

The order or arrangement of leaves on the stem; the science of the relative position of leaves.