I have plenty of those and they grow fast. However, they don't necessarily frag well. I've had moderate luck fragging because they put off ALOT of slime when you mess with them and nearly self destruct even with great care fragging. Name? Everyone around middle tennessee calls them green/brown palys (depending on the light you're viewing them with ). Obviously not too fancy of a name... probably due to their commonality... still though they are pretty with the right lighting.
Marvin... in your avatar... what are those? They are actually similar to the ones in the post, but I've not see that color unless its a doctored photo.