Observation 49438: Stereum ostrea (Blume & T. Nees) Fr.

When: 2010-08-01

Collection location: Beaver Co., Pennsylvania, USA [Click for map]

Who: Bob Zuberbuhler (Bob Z)

No specimen available

This almost paper thin fungus was found on a well rotted log that also hosted colonies of usual size Stereum ostrea and of Phlebia incarnata. The fungus pictured here was large; 5" wide and 5" tall. The side edges were turned up so that it looked like a scoop. On the upper side there were many concentric ridges and it was very dark everywhere but the distal edge. Here there were lobe-like projections with lighter, more brightly colored zones. The under side was not gilled or pored, even on high magnification and was very dark in the main. There were lighter zones near the distal edge, seemingly overlying the dark area and projecting out like the lobes in the top view.

This fungus seems to have the characterisics of stereum ostrea except for its size. I’m puzzled by the areas that look much younger than most of the fungus. Could they be a second generation superimposed on an older one? I would appreciate other opinions.

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Created: 2010-08-01 09:35:32 PDT (-0700)
Last modified: 2010-08-01 09:35:35 PDT (-0700)
Viewed: 31 times, last viewed: 2017-06-07 19:39:32 PDT (-0700)
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