Observation 220769: Porodaedalea gilbertsonii (M.J. Larsen)
When: 2015-10-17
No herbarium specimen

Notes: Growing on Douglas-fir in the San Francisco Peninsula Watershed. This fungus causes a pocketed white rot in conifers and is often found on Douglas-firs. The hymenophore is usually yellow-brown to brown and has a sort-of maze of pores that are very irregular. It is often hoof-shaped but can be more planar.

Microscopically, you will find dark setae sticking out in the pores, characteristic of the Hymenochaetales.

If you see these on a tree near your house or other structure that you like, keep an eye out. It can cause huge losses in structural integrity (and timber value)!

Images

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Ungulate fruiting body
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Mazoid pores (slightly blurry, sorry!)
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Dark setae emerging in the interior of the pores

Proposed Names

19% (2)
Eye3
Recognized by sight: Ungulate shape, mazoid pores, growing on Douglas-fir
Used references: California Mushrooms, by Desjardin, Wood, & Stevens
Based on microscopic features: Dark setae

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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I guess we don’t have Porodaedalea pini in North America
By: Alan Rockefeller (Alan Rockefeller)
2015-11-03 12:50:25 CST (-0500)

Created: 2015-10-27 15:03:46 CDT (-0400)
Last modified: 2015-11-03 12:50:39 CST (-0500)
Viewed: 55 times, last viewed: 2016-11-16 13:58:29 CST (-0500)
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