(none)

[Jessie Micales]

Sounds like Trichoderma to me - a very common contaminant.  
Mercuric chloride is not a true sterilizing agent, just a surface 
disinfestant.  It would be better to sterilize your glassware in a 
pressure cooker, assuming that you don't have an autoclave 
available.  Things aren't truely sterilized unless they are kept 
at 15 pounds pressure for 15 minutes.

Jessie Micales
Forest Products Laboratory
Madison, WI