Euphorbia dentata / poinsettia dentata/ toothed spurge
I've 'inherited' a new wildflower/weed in my flower bed this summer. I finally got it identified as "euphorbia dentata" (sometimes known as "poinsettia dentata") or "toothed spurge." It's an annual, native to N. America and seems to have no problem growing in Portland, Oregon, where I live.
I find it quite ornate, with its rather complex geometric patterns of leaves and its clusters of small, light green 'berries' (buds). I'm wondering it it would make a good houseplant or controllable garden plant like its cousin the poinsettia.
Some drawings, pics, and links to more info are in this thread.
And more pics and scientific info can be found here.