Basketry material (5)
I believe the answer is:
osier
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">basketry material</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 osier that I've seen before include "Weaving cane for Rosie" , "branch" , "Salix" , "Basket material" , "Bit of tree" .)