Observation 149271: Trichoderma viride Pers.
When: 2013-10-19
0 Sequences

Dark teal / pale turquoise dusty surface with white perimeter on wet logs at end of season

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Thanks Daniel
By: Martin Livezey (MLivezey)
2014-03-01 13:21:16 PST (-0800)

Great perspective

It literally is
By: Daniel B. Wheeler (Tuberale)
2013-10-19 16:51:19 PDT (-0700)

found in almost all soils worldwide. Which is why growing Lentinula edodes (or almost anything else) is so problematic.

It favors calcium-rich sites. In my area, it grows readily on grout in shower stalls. But in almost any area where calcium is present, you will find T. viride.

It really is a pest in cultivating fungus. It outgrows almost anything. And if you add a buffering agent to your substrate bags, it grows on that as well. It hitchhikes everywhere, and is the major reason you must sterilize substrate before starting new cultures.

I didn’t see the other observation. I haven’t seen it on Laccaria before.

Forest green mold
By: Martin Livezey (MLivezey)
2013-10-19 16:00:22 PDT (-0700)

is a good name. It is everywhere but colonies are often very small. It never seems to take over. It is the anamorph of hypocrea I think, which I see less often, but those fruitings can be much larger. Both seem more frequent later in the season. It would be interesting to try to grow it in a culture dish. The spores might be the same color in the slides as they appear in situ.

Daniel: Did you see this one? http://mushroomobserver.org/147989?q=1ZULf

Trichoderma viride, probably.
By: Daniel B. Wheeler (Tuberale)
2013-10-19 14:59:25 PDT (-0700)

Mushroom Cultivator author Paul Stamets calls it a common contaminant. He also terms is “Forest Green mold”, which seems appropriate.

Created: 2013-10-19 12:40:53 PDT (-0700)
Last modified: 2013-10-19 16:05:34 PDT (-0700)
Viewed: 72 times, last viewed: 2017-08-21 03:01:10 PDT (-0700)
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