Crown of thorns

Wow, I just know that the sap can make eyes go blind.

Thank you Sanjay..... :)

from the Latin euphorbea for Euphorbius, a Greek physician in 1AD who used the sap medicinally; native to Madagascar; milky latex sap "bleeds" when stems are cut, and can be stopped by immersing in warm water; sap may cause skin irritation or blindness; from a very large genus of over 2000 species including the popular poinsettia; supposedly the plant used for Christ's crown of thorns

thank you Daniela for suggesting my spot....