Colleters

• Colleters are structures giving off sticky secretions that are insoluble in water
• Collecters developed on young foliar organs and the secretions cover the entire bud
• Colleters are protective coating for the dormant bud and protect developing meristems and young, differentiating leaves or their stipules 
• Different types of collecters

  (A) The most common standard type

  (B) The reduced standard

  (C) The dendroid

  (D) The brushike