How many letters does the top answer for “a plant of the genus aconitum; aconite. see aconite.” have?

The most common answer is monkshood (9 letters).

Crossword clue: a plant of the genus aconitum; aconite. see aconite.

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

monkshood 9 letters web-def

a poisonous herb native to northern Europe having hooded blue-purple flowers; the dried leaves and roots yield aconite

a genus of plants. see rhubarb. 50% similar → rheum

a genus of plants. see yam. 50% similar → dioscorea

a genus of plants; the mandrake. see mandrake, 1. 50% similar → mandragora