For people who feel resentment and bitterness and hold grudges against those with whom they have been very close e.g. family members and old lovers. This resentment is often not openly displayed. The plant gets its name from the needle-like barb that grows on its leaves.
 
Negative Condition
Resentment
Bitterness towards close family, friends, lovers
 
Positive Outcome
Forgiveness
Open expression of feelings