The quite possibly wise Gene Newcomb was heard saying:
You might however take a look at the following URL.

http://www.cnr.vt.edu/dendro/dendrol.../ohorridum.htm

It's a close match in appearance, but the description (particularly, "3
to 12 feet tall" and "armed with fine, irritating prickles") seems to be
incorrect for the plant pictured.

Thank you very much for your help, though.

Colin

--
Colin W. Wetherbee
http://hydrogen.denterprises.org/