Hi, I was out for a stroll the other day down by a local canal in Chilliwack. I was wondering if you could identify one a tree, and two a shrub? Thank you. Sean
Red-twig dogwood. Not sure views of Juglans good enough to be sure it is not just as well one of the related species, such as J. cathayensis; J. ailantifolia is not the only one from this group present here (unless they've been merged or subsumed). But probably not J. cinerea (the North American native representative) as the leaves and leaflets look too bold.
They've not been officially merged, but probably should be as the differences are minimal (Grimshaw, Int. Dendrol. Soc. Yearb. 2003: 107-130).
Thanks Ron and Michael, for making me question that particular received wisdom. Anyway, I had an opportunity to check for myself yesterday. It is indeed Juglans ailanthifolia that is the common escape in the Fraser Valley. The leaflets are very broad. The fruits are on a long raceme and they are more or less globose, rather than pointy. It's terrible when you find out you've been wrong about something for twenty years.
Apparently the region agrees with them, as large Asian walnuts and butternuts are encountered repeatedly in cultivation in NW Washington. See Van Pelt, Champion Trees of Washington State (1996, University of Washington) for locations and dimensions of specific examples.