When: 2014-05-14

Collection location: Mogollon Rim, Coconino Co., Arizona, USA [Click for map]

Who: Terri Clements/Donna Fulton (pinonbistro)

No specimen available

Woody conk 11 cm across on dead standing conifer (douglas fir I think) at about 6500’ elevation in ponderosa pine/douglas fir/spruce habitat. These red belted polypores from the arid SW look quite different from those we find in the humid NE. They are much paler, less varnished looking and frequently just in very rough shape from the harsh climate. We find these everywhere on dead conifers at the 6500’ to 9500’ elevation and we’ve tried to document some of them to show various stages of growth—from just emerging bits of varnish to very weathered specimens like this one.


Proposed Names

-18% (3)
Recognized by sight: very old dry FB, most of varnish is gone but the black point of attachment and red brown color near it are apparent
Used references: Kuo, M. (2010, February). Fomitopsis pinicola. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/fomitopsis_pinicola.html and USDA Field Guide to Insects and Diseases of Arizona and New Mexico Forests and obs 135926 which was ID’d by an expert at the USDA Forest Service office in Flagstaff, Az
86% (1)
Used references: New name for SW clade of F. pinicola group: Haight et al. 2019

Please login to propose your own names and vote on existing names.

= Observer’s choice
= Current consensus


Add Comment
Terri’s question
By: Chaelthomas (Chaelthomas)
2017-03-23 06:00:33 PDT (-0700)

Yes the pincola group has 3 species
Fomitopsis ochracea, ponderosa and pini-canadensis

Hi Herb,
By: Terri Clements/Donna Fulton (pinonbistro)
2015-03-02 17:03:41 PST (-0800)

Very cool that our SW F.pinicola’s have been renamed—as Irene pointed out they sure don’t look the same as specimens we find in Maine. I noticed that Polyporus ponderosus is a synonym for F. ponderosa. Any reason why you chose Fomitopis ponderosa for your name proposals?


PS If I understand the Scholarworks article correctly F. pinicola is a European species, F. ponderosa a SW American species and there are two species of the old F. pinicola species cluster which occur from Alaska to Maine. I think one is F. ochracea (no red belt). Do we have a name for the classic NA red belt conk which I find frequently on conifers?

By: Irene Andersson (irenea)
2014-05-17 07:54:46 PDT (-0700)

I suppose you know their looks in your area better than I do :-)

Hi Irene
By: Terri Clements/Donna Fulton (pinonbistro)
2014-05-16 21:32:56 PDT (-0700)

I’m pretty sure this is F. pinicola. I know it is very washed out looking but that is how they look in the arid SW. This is a pretty old beat up version but the fat orange margin is common here, as is the lack of varnish. Unfortunately my photos aren’t great due to the bright sun and shadows. Please read my updated notes. From Wikipedia: “Cap hoof-shaped or triangular, hard and tough texture, up to 30-40 × 25 × 10 cm. Surface is more or less smooth, at first orange-yellow with a white margin, later dark reddish to brown and then frequently with orange margin. Pore surface pale yellow to leather-brown, 3-4 pores per mm. Grows on live and dead coniferous or (less common) deciduous trees.”


Created: 2014-05-15 20:36:28 PDT (-0700)
Last modified: 2019-03-27 19:31:17 PDT (-0700)
Viewed: 276 times, last viewed: 2019-11-03 12:49:33 PST (-0800)
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