Australian acacia (6)
I believe the answer is:
wattle
'australian acacia' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for wattle that I've seen before include "System of rods and branches for fences" , "Fence material; an acacia" , "Material for fences, roofs etc - it hangs from a turkey's throat" , "Tree - interwoven branches" , "(Turkey's) loose flesh" .)