Mushroom parts
I believe the answer is:
caps
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">mushroom parts</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 caps that I've seen before include "Headgear for internationals" , "Imposes limits on" , "Bottle tops" , "Coverings, for heads say" , "Head-coverings" .)