Ray:
> On the Palouse, the native species are pretty much gone, and the
>four introduced species do well on what one might call "edge habitat,"
>small riparian strips, towns, parks, and canyons which can;t be plowed.

"edge habitat" - as in "edge of the wheat field"!!

You've got it nailed right on the head, there.

- Don Baccus, Portland OR <donb at rational.com>