I don't think they do, I'd even say that looks bristled it's so hairy! I thought it was fine thorns like a rose gets on the bloom stem.
The pic is awfully grainy, your right, and my screen is tiny! So I can't see it well enough to say for sure but I think you have something else there.
I'd say legume family ( peas and locusts) the leaves look the part and I think if I see the flowers right they look like legume flowers too...
I'll be watching!
