Observation 74016: Heterobasidion occidentale Otrosina & Garbel.

Massive conks covering the base of a large old growth Douglas fir tree.
Lara Boyd pictured below for scale.

No red belt evident- and very irregular(wavy shape) to all conks- could be a less colorful form of F. pinicola.

Species Lists



Proposed Names

19% (2)
Used references: “National Audubon Society Field Guide To North American Mushrooms”-Lincoff (pg. 465)
84% (1)
Used references: Otrosina, William J. and Matteo Garbelotto. 2010. Heterobasidion occidentale sp. nov. and Heterobasidion irregulare nom. nov.: A disposition of North American Heterobasidion biological species. Fungal Biology 114: 16-25.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Thanks Darvin-
By: Drew Henderson (Hendre17)
2011-08-15 20:50:18 MDT (-0600)

Appreciate the resources and ID with these ones…

Created: 2011-08-15 14:56:21 MDT (-0600)
Last modified: 2011-08-15 20:23:35 MDT (-0600)
Viewed: 124 times, last viewed: 2019-01-16 13:15:57 MST (-0700)
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