Family origins (5)
I believe the answer is:
roots
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">family origins</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 roots that I've seen before include "Origins; cheers (for)" , "eg Parsnips" , "Antecedents" , "Underground parts of plants" , "Beginnings, origins" .)