5 prong it's hard to say by that description, could be any of them really. When young/fresh they all will have closed pits and rounded edges. The pits will become more defined as they mature and the ridges become thinner. I am going to guess Esculenta though. You have any photos by chance? Here are a few from today.
Here are comparison pix from the tiny black pic I posted the other day on the 1st, and the one I took today on the 5th.
the ridges are rounded and pits closed.
the pits are opening and the ridges thinning, and darkening. After blacks have been up awhile they are alot easier to see for most people.
a fairly fresh black with closed pits and light colored ridges that haven't been exposed to the sun and wind for long
an older black with darkening ridges, yet still fresh. I left all of the ones I found today and will let them mature more before picking.
I also found this, a false morel (Gyromitra)