Porcupine flower, Espinosa amarilla or Picanier jaune Barleria prionitis in Hyderabad , India. by J.M. Garg 20 Sept 2008 CC BY-SA 4.0 http://commons.wikimedia.org/wiki/File:Barleria_prionitis_(Porcupine_flower)_in_Hyderabad,_AP_W_IMG_9989.jpg