Common name: Gympie gympie, stinging bush
Scientific name: Dendrocnide moroides
Hazard associated: The plants are covered in hairs which inject a potent neurotoxin.

Notes:

• Gympie Gympie is a rainforest tree found in Northern Australia (primarily Queensland) and Indonesia.
• The plant sheds hairs so you do not need to touch it to be affected; just being in its vicinity has resulted in itching and nose bleeds.
• The fruit is reputed to be edible but all hairs need to be removed first.
• Contact with the plant hairs results in severe itching which may persist for months. The injured area becomes covered with small, red spots which can join together to form a red, swollen mass.
• Repeated exposure increases the severity of the allergenic effect.

Wikipedia page: https://en.wikipedia.org/wiki/Dendrocnide_moroides