Melampsora populnea

	Stem damages produced by fungus in the leader when the tree was a sapling.
	Detail of damages in the stem.
	Canker in a young shoot.
	Shoot deformation produced by the canker.
	Damages produced when trees are still young render the wood useless for timber.
	Uredia on a Populus leaf.
	Uredium detail.
	Urediospores.
	Proximity between pines and poplar stands favours the development of the disease.

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