Oregon State University
Alphabetical List of Tree Common Names Alphabetical List of Tree Scientific Names Identification Key Mystery Tree

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Mystery Tree #7

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  • Leaves: Large leaves (6 in. long), especially the leaves near the top of the tree which are much larger; triangular in shape with a long petiole; green on top and white below with rusty markings.
  • Fruit: capsules dangling on a stem that pop open and have cottony tufts attached to tiny, black seeds.
  • Twigs: stout, arranged alternately on branches; the buds at the end of the twigs are large, pointed, sticky, and smell sweet.
  • Distribution: Found this tree along a watercourse in the Willamette valley, western Oregon, but can be identified in riparian areas from southeast Alaska to Baja California, and from the Pacific Coast to the Dakotas.


To identify this tree, work your way through the Dichotomous Key.



If you already know the identity of the Mystery Tree, go to the solution page.

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