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When: 2013-04-12

Collection location: University of Washington, Seattle, King Co., Washington, USA [Click for map]

Who: BlueCanoe

No specimen available

Blue stain fungus on trunk cross-section of shore pine (Pinus contorta var. contorta), associated with bark beetles (Dendroctonus sp.).


Blue stain fungus with bark beetle

Proposed Names

56% (1)
Recognized by sight: Black Stain Root Disease is a problem in forestry that marks the sap wood in the lower portion of the trunk, crown and roots. It eventually kills the tree.
Also known in the recent past as:
Ceratocystis wageneri Goheen & F.W. Cobb, Phytopathology 68(8): 1193 (1978)

Verticicladiella wageneri W.B. Kendr., Can. J. Bot. 40: 793 (1962)

Used references: Anonymous. Forest Disease Management Notes. U. S. Dept. of Agriculture and U. S. Forest Service, Portland, OR.
Bega, R. V. 1978. Diseases of Pacific Coast Conifers. Agriculture Handbook No. 521. U. S. Gov’t. Printing Office, Washington D. C. 206p.
Carmichael, J. W., W. B. Kendrick, I. L. Connerse and L. Sigler. 1980. Genera of Hyphomycetes. The Univ. of Alberta Press, Edmonton, Canada. 386p.

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= Observer’s choice
= Current consensus


Add Comment
does this
By: Danny Newman (myxomop)
2016-07-08 21:50:18 CDT (-0400)

ever take on the same sort of blue as Chlorociboria? I see it called “blue stain” for short everywhere I look.

Anyone know of a reference to a Grosmannia Key?
By: Darvin DeShazer (darv)
2013-05-18 14:34:05 CDT (-0400)

I have not been able to find a key that separates these two species of Grosmannia. They seem to have been lumped into the same genus, coming from different genera, in this paper: