Rhodactis sanctithomae?

[MJT82]

I have some cool little hitch-hiker mushrooms that came in on a rock with a big umbrella mushroom that I got. There are 3 of these guys on the rock with the big green umbrella, and they started out super tiny, and now they are about an inch across each. I think they are beautiful! I looked in a couple of my books and the closest I could get was in Sprung's Quick Reference Guide to Invertebrates, where he ID's something like this as a Rhodactis sanctithomae ... Anyone have any insight? The reason I think it's this species is the little "bubbles" that appear on the 'shroom's surface. I have never seen any like this before...

Sorry for the poor quality pic... I left my camera at school and had to use my dads!
Here is one of them:

 

[ntfish]

It looks to me like it could be a sanctithomae. Is that the umbrella next to it? If that is the umbrella, it looks different than most I've seen. If this rock is of caribbean origin and recently collected, I'd say it most likely is a sanctithomae.

 

[MJT82]

Yep, that's the umbrella... I had 2 that were part of my casualties of Hurrican Katrina, but there was a TINY piece left on the rock that didn't die apparently, because it's growing back well!

 

[chrisstie]

I really want one of those but can't find them anywhere