August 21st.
I spotted these polypores on a small branch that had fallen during a recent
storm.
From a distance, it
was clear that they were something that I had never seen before, and not something
that I would mistake for another fungus.
The mature polypores
were approximately 1 to 1.5 inches ‘wide’ and 1 inch ‘deep.’ The ‘main’
polypores were a very pale cream color with zones of darker color. They were
attached to the branch by a short ‘stem.’ Most of the large
polypores had a small ‘cup’ at the point of attachment of the polypore to the
branch. These cups were 0.25 to 0.75 inches wide, and had concentric zones of
cream and dark browns or grays.
Further along the branch were small cups that didn't have the larger polypres.
The pores on the
underside of the brackets were clearly visible to the naked eye in stark
contrast to the pores on a Turkey Tail (Trametes versicolor) bracket. The pores
were approximately 0.5 mm in diameter, angular, and irregularly shaped.
The caps also had
pores of the same size as the larger polypore.
It didn’t take long
to identify these as the Little Nest Polypore (Poronidulus conchifer). These
fungi are sometimes called Trametes conchifer in some field guides, but they
have been assigned to their own genus.
Poronidulus
conchifer polypores grow on branches, stumps, and logs east of the Great Plains
in North America. The small caps develop first, and the larger polypore develops later. As they age, the small caps fall off, leaving the larger polypore. Aged polypores lose their
color, and are stark white. It is rare to find photographs of fresh specimens.
So far, I have seen them on recently fallen branches in
Barrow and Walton counties in Georgia. I have also weathered polypores on
branches that had fallen in previous seasons.
Reference;
Kuo, M. (2010,
March). Poronidulus conchifer.
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