Related Clues:

• Poison ivy, e.g.
• Poison ivy's cousin
• ''Poison'' plant
• Ornamental tree
• Staghorn, for example
• ''Jurassic Park'' mosquito preserver
• Itch-causing plant
• Amber origin
• Lacquer component
• Epoxy, e.g.
• Organic polymer
• Substance obtained from some pines
• Shrub often toxic
• Poisonous shrub, perhaps
• Ingredient in plastics