I know Mahonia is considered Berberis by many, but for the moment let's not quibble.
This mostly smooth leaved plant was in Vancouver WA (Portland OR area) and caught my eye because of lack of prickles on the leaf edges.
Does anyone know it?

Some type of Senna?

There is a thornless variety of Mahonia, Anping Mahonia (Mahonia eurybracteata subsp. ganpinensis 'Soft Caress') but the leaves don't look right for that one. Your plant reminds me a lot of Rhus species.

Looks like an Ailanthus, aka tree of heaven, taking over the planter.

It is a Mahonia. I know Senna, Rhus, and Ailanthus, and many, many cv.s of Mahonia as they are widely used here and in the PNW.

I think Zoe nailed it! Tree of Heaven (Ailanthus altissima)

plantladylin said: I think Zoe nailed it! Tree of Heaven (Ailanthus altissima)

I'm on a first name basis with Trees of Heaven. That's not one.

Good thing!

Definitely Mahonia/Berberis. If you look real close at the top of the center stem, you can just make out the clasping leaf-bases that eliminate all the suggested ids. I imagine the leaf texture is quite different from those too. Sorry, I don't know which species/cv. Really cool-looking though. I want one.

Looks like Mahonia x media 'Marvel', a toothless hybrid

tofitropic said: Looks like Mahonia x media 'Marvel', a toothless hybrid

That's it.