This little guy is Lepiota lutea
common in lawns and gardens when warm, more common in warm house plants and green houses.
Harmless to you and your frog but don't eat it, some people claim it is edible but some do not.
Mist it daily and more should appear.
I had some show up in my Definbacia plant
For more info see page 302 and color plate 70 in Myshrooms Demystified by David Arora.
:jester: