Observation 129646: Xanthoporia andersonii (Ellis & Everh.) Murrill

When: 2013-02-26

Collection location: Sugarloaf Ridge State Park, Kenwood, Sonoma Co., California, USA [Click for map]

38.4414° -122.4894° 148m

Who: George Riner (mycogeo)

No specimen available

Gilbertson & Ryvarden, vol. 1 – growing on oak, under the bark layer and causing the bark layer to separate; yellow spores; setae in hymenium; dimitic; resupinate.

On the switchbacks of the trail from “Uranus” to “Neptune”.

LatLon= 38.441389 N 122.489444 W


bark layer removed set down to show yellow spores and hymenium on underlayer
close up of pore surface
mass of yellow spores accumulated on inside layer of bark
resupinate layer of tubes on sapwood layer under bark
showing spores and setae
Taken at the microscope lab with a student microscope at Merritt College. Mounted in 5% KOH.

Proposed Names

57% (1)
Recognized by sight: Bright yellow spore print in the log and covering cobwebs and moss. The yellow edges of the barely-formed brackets. The brownish grey pores.
84% (3)
Used references: Gilbertson & Ryvarden, vol. 1, p. 356 – 361
Based on microscopic features: setae in hymenium

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Darvin DeShazer (darv)
2013-03-01 10:04:24 PST (-0800)

Inonotus glomeratus is reported from the Pacific Northwest and as far south as Oregon. You would need microscopic data to confirm this excellent find.

Created: 2013-02-28 16:21:13 PST (-0800)
Last modified: 2017-01-17 09:50:30 PST (-0800)
Viewed: 214 times, last viewed: 2018-05-04 01:03:54 PDT (-0700)
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