Ellsworth Kelly's plants

My old friend MD just brought to my attention Ellsworth Kelly's plant drawings, many now on view at a major exhibition at the Met. A show I'd love to see.

Here's a briar, presumably of the genus Smilax, a thorny bugger that forms thickets and used to frequently draw blood from me on walks in the Connecticut woods. I was about to write that we do not have native Smilax in California, but that's not quite correct. Thankfully the ones we do have all live well north of my regular woodland haunts...