Hef - yours IMO is more of the `Green Bali Slimer' type ... I have one that was claimed to be from Tyree, and IMO the growth is much denser, coral body is more colored, and has rounded ends on the coralites vs. the `tube/squared' type ends of the coralites on my `traditional' green slimer.
Look quite similar, but IMO, the coralites and esp the shape of the tips show a significant difference.
Had both in my tank for a couple years now, and IMO they're different corals - though both hardy, green, and generally staghorn-like. IMO, the Tyree one grows slower.
Both sweet corals, but IMO, there is more than one coral variety labeled as `green slimer'.