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Spores or molds on aluminum or glass?

Heine J. Deelstra heine at deelstra.net
Mon Sep 3 15:43:36 EST 2001

> He would like to know if there is a spore or mold that attaches itself
> to vinyl or aluminum siding and/or glass. He says it is small, 1-2 mm in
> diameter and is difficult to remove. If there might be such a thing,
> what could be its genus, how is it spread, prevention methods and
> possible remedies?

Yes there are several one of these is Entomophthora muscae (lit. Insect
Destroyer of the Fly), but this one will usually stick flies to the glass as
well. See http://www.wisc.edu/botany/fungi/mar2000.html

Another fungus much more important for insurance adjusters is Sphaerobolus
stellatus which often fruits above gardens with wood chip mulch. The
launched spores will stick to anything and are very difficult to remove.
When they finally fall of a brown stain is left.
The fruiting body is strongly phototrophic and will direct the ejection of
spores to the light (sun, or reflecting material (Alu, glass)).

See for Sphaerobolus stellatus:

See http://www.ces.ncsu.edu/depts/pp/notes/oldnotes/gp1.htm for pictures of
the stains.


Heine Deelstra

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