Flower of the buttercup family (7)
I believe the answer is:
anemone
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">flower of the buttercup family</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for anemone that I've seen before include "Woodland plant, eg the windflower" , "Plant with bright flowers" , "A flower; mean one (anag.)" , "Buttercup-like flower or sea animal" , "Flower; marine polyp" .)