The quite possibly wise P van Rijckevorsel was heard saying:
I am the wrong person for this but to me it looks like a Rubus species, all
too common. It sure feels unfriendly when touched in passing.

I found a few images of plants from the genus Rubus, but none seem to
look like the plant I've found. Specifically, I found Rubus
spectabilis, Rubus mesogaeus, and Rubus deliciosus. Thanks for your
help, though.

Colin

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