Jeff,
Not sure but I would say to much water & not enough light & air
movement.

DaveA




On Thu, 21 Aug 2003 00:17:20 GMT, "P.J. Bloodworth"
wrote:


For instance, I've noticed various tiny mushroom-like fruiting structures
which I don't worry too much about. But lately, in my Angraecum
sesquipedale, I observed a rather vigorous white mycelial mat or fan
spreading throughout the bark-based medium. My thought was: How good can
this be for the longevity of the medium, not to mention the health of the
plant? So I soaked the pot in a Physan 20 solution (1 TBSP/gallon), watered
it a little less and thought I had licked the problem. A couple of weeks
went by and one morning I saw growing out of the bottom drainage hole of the
suspended pot this huge white gilled mushroom with a cap about 3-4 inches in
diameter!