Observation 59904: Phlebiopsis gigantea (Fr.) Jülich
When: 2010-11-21
Herbarium specimen reported

Notes: This was on the underside of a Pitch Pine branch in a pine grove on Cape Cod.
We thought it was definitely Sebacina at the time, but then I got it home and looked at it and the microscopic features tell a different story. So…
The fruiting body is resupinate: appressed to the substrate and it covers the surface of other detritus as you can see from the pics. It’s grayish white, waxy and very cartilaginous with a smooth – tuberculate surface and finely pruinose under magnification. Some areas are opaque while others are more transparent. It peels away from the substrate pretty easily and breaks up into waxy clumps. It’s about 1mm or so thick with a white cottony subiculum in places. The margin is diffuse and fiberous, white.
I can’t say what kind of rot it produces from my field observations.

[admin – Tue Feb 08 12:35:00 +0000 2011]: Changed location name from ‘Myles Standish State Forest, Duxbury, Massachusetts. United States’ to ‘Myles Standish State Forest, Duxbury, Massachusetts, USA

Proposed Names

-53% (1)
Used references: Fungi of Switzerland Vol. 2
The Corticiaceae of North Europe by Hjortstam, Ryvarden and Larsson
Based on microscopic features: SPORES: White in mass, elliptical, smooth 5.5 × 3 micrometers, inamyloid, hyaline, no oil droplets observed.
BASIDIA: Slenderly clavate without basal clamp, about 5um wide. I couldn’t get a good measurement on length so I really can’t say. Maybe 15um, maybe 30?
HYPHAE: Densly interwoven, monomitic (as far as I can tell), simple septa no clamps observed (?)
SETAE: I saw many differently shaped structures here and it was hard for me to differentiate them or say exactly what they were. Anyhow, I did see acicular (needle tipped) encrusted setae that were 66-90 × 11um.
Based on chemical features: No KOH reaction anywhere.

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awesome collecting data as usual!
By: damon brunette (damonbrunette)
2010-12-08 22:31:17 CST (-0500)

Is the ‘The Corticiaceae of North Europe by Hjortstam’ a book you would recommend?

Created: 2010-11-28 23:31:43 CST (-0500)
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