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"Furry" polypore ID help?


Gillian

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I found these yesterday on a beautiful hike along the Bruce Trail in Ontario.

Growing on a fallen log, couldn't tell the tree species but in a hardwood forest (lots of maples and oaks), hillside and quite well drained.

7cm diameter white/brown top with definite 3-4mm "hairs". I thought this was moss at first but it does seem to be part of the fungus.

Underside yesterday was white. Spore print a medium gray. Pores seem mostly round.

Spongy texture, not woody.

 

Polypore 1.JPG

Polypore 6.JPG

Polypore 7.JPG

Polypore 8.JPG

Polypore 9.JPG

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I looked this up in my Audubon book and I think it's a Tyromyces caesius...the Blue Cheese Polypore. It seems like it also can be called an Oligoporus caesius or a Postia caesius. I'm not sure why it would have three different Genus names.

This is the only one with a blue grey spore print. It's very moist and spongy.

Although in my indoors photos the top looks more brown, the field photo shows the grey blue hue.

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I think the blue-gray spore print is good info supporting Postia caesia, also the hairy upper surface. Although the irregular/mazelike pores are interesting. 

During the past 20 years many types of fungal species have been shifted into new genera, as per DNA data indicating phylogenetic relationships heretofore not understood. I have heard that Gary Lincoff had offered to update the Audubon guide, but the publishers declined his offer because the book continues to sell well. 

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