Yeah, i think so also(after google 'clitocybe')...
Those appear to be some sort of a Clitocybe possibly. I wouldn't eat them.
Its somewhat nearer to this picture i found in the web:
They named this one as Clitocybe eccentrica. I found this at here: http://www.mushroome...eccentrica.html
On closer look, the once i found have almost the very same features as this one at mushroomexpert.com. The cap formation and even the color and those brow to white hues is exactly the same; even the gill formations is also the same; and it grows on wood too.
The only thing different is the stipe. Those i found(#16) had no stipe like those on the picture. The gills of what i found runs from the caps to the base roots - it has no stipe(as i actually see them).
Anyway, as i looked into other family members of the Clitocybes, the ones i found must been very very close relative.
Since we are now in page 3, here's a picture of specimen#16 for your reference.
This specimen seemed to look whiter because this shot was taken on a very sunny day after an evening rain.