Friday 31 January 2020

Stereum serendipity


Wandering through the Northeast edge of a wet and muddy Dene Park today meandering through the Yew copse towards the Alders down by the waterworks, there were a few patchy finds to be made. Also there was an opportunity to weed three Laurel seedlings, every little helps! As you move off the car park, the first compartment has a number of Beech, but as you move up the hill there is quite a dense cluster of youngish Birch trees, with some standard Oak. Here is a view of the Birch, note the dense stems. It is quite easy to find some Stereum and Schizopora in this area.


On a fallen Alder by the weir I found what I think was a young fairly flexible Stereum subtomentosum (Pouzar) nicely orange overall but clearly white-edged. This is generally called the Yellowing Curtain Crust, and it should have released a bit of yellow fluid when cut - which of course I forgot to test for, even though I had deliberately brought my knife with me for the first time. |A scratch of the lower surface is the recommended approach.

The brackets should be quite narrowly attached, about 3 - 7 cm across and 1 - 2 mm thick, and irregularly wavy at the edges. These were also obviously much less hairy than Stereum hirsutum, hence subtomentosum, but the hairiness is apparently quite variable according to the interweb. Spores should be being released in summer and autumn and the spore print should be white to a very light tan in colour.


There were also apparently older outgrowths further along the trunk, showing the very significant differences in appearance as the "ears" age,






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