Belladonna lily (9)
I believe the answer is:
amaryllis
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">belladonna lily</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for amaryllis that I've seen before include "Plant with showy flowers - I rally Sam (anag)" , "Trumpet-flowered bulb" , "Bulb with showy flowers" , "Lily-like plant" , "belladonna lily brought this about" .)