You've found the famous Dave's Garden website! Join this friendly global community that shares tips and ideas for home and gardens, along with seeds and plants!
Check out the DG homepage for a brief overview of what you'll find in this gardening mega-site.
Login
If you don't have an account yet, visit the registration page to sign up.
Growin, you are correct, it is a member of Boraginaceae family. It's called fiberglass plant (Wigandia urens) on account of its prickly trichomes (hairs) that cover the leaves.
It actually looks to be in the Hydrophyllaceae although it seems to be so closely related. I noticed these in the gravel on the side of the road growing at the edge mostly. I thought it was just a big perennial.