Observation 164592: Morchella tridentina Bres.
When: 2014-05-03

Notes: A single sporocarp was found, but I am making it available for scientific study.

Species Lists


In situ. Fronds of Sword fern in background.
Stipe is 3.5 inches long, cream-colored, with pits at base.
Entire sporocarp is 6.5 inches tall.
Details of base of stipe. Notice the pits, and the slight yellow coloration.

Proposed Names

29% (1)
Recognized by sight: This form was mycorrhizal with live Douglas-fir. Lots of dead Bigleaf maple (Acer macrophyllum) from trail building in last 2 years within 80 feet of where this beauty was located. No dead trees in the immediate area where this was found, though.
48% (2)
Recognized by sight
83% (1)
Recognized by sight: older, currently accepted name for M. frustrata.
Used references: True morels (Morchella, Pezizales) of Europe and North America: evolutionary relationships inferred from multilocus data and a unified taxonomy
Franck Richard, Jean-Michel Bellanger, Philippe Clowez, Regis Courtecuisse, Karen Hansen, Kerry O’Donnell, Mathieu Sauve, Alexander Urban, and Pierre-Arthur Moreau
Mycologia 2014 14-166; Preliminary version published online: December 30, 2014, doi:10.3852/14-166
Based on chemical features: DNA determined to be a genetic match to Kuo’s frustrata, but an older name.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Thanks for the possible species, pinonbistro.
By: Daniel B. Wheeler (Tuberale)
2014-05-04 11:17:00 BST (+0100)

I went to Kuo’s description, and found this: “Cap: 4-6 cm tall and 2.5-4 cm wide; conical or nearly so; pitted and ridged, with the pits primarily arranged vertically; when young with bald, slightly flattened, yellowish to nearly whitish ridges and pits; when mature with sharpened or eroded, pale tan to yellowish ridges and pale tan to pale pinkish tan pits; attached to the stem with a small groove (2-4 mm deep); hollow.”

Cap on this specimen is 3" tall (7cm), but otherwise matches Kuo. M. frustrata is said to be a montane species. This collection was found at elevation 100 feet along the Columbia River.

M. frustrata is said to be somewhat frustrating. YEP, THAT FITS!

Created: 2014-05-03 22:25:00 BST (+0100)
Last modified: 2015-01-14 00:36:39 GMT (+0000)
Viewed: 57 times, last viewed: 2016-10-23 00:33:15 BST (+0100)
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