Observation 134815: Morchella brunnea M.Kuo

When: 2013-05-25

Collection location: Yakima Co., Washington, USA [Click for map]

Who: BlueCanoe

No specimen available

Found in mixed-conifer forest at mid elevation. These were growing in a somewhat shadier, more damp site than most M. snyderi found nearby.


narrow stipe diameters relative to caps

Proposed Names

40% (5)
Eye3 Eyes3
Recognized by sight: smooth, simple, narrow stipe compared to M. snyderi
-30% (4)
Recognized by sight
10% (2)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Kuo was a starting point
By: Debbie Viess (amanitarita)
2017-05-11 20:52:03 SAST (+0200)

we have evolved.

I also used to think as you do, but the MO data convinced me otherwise.

see the pale brown ridged, DNA determined examples of west coast brunnea from Alan here:


IMO, the entire point of using DNA is so that we can eyeball or scope ID these morels with more simple, and certainly cheaper and less time consuming methods.

M. brunnea has dark brown to black ridges when young
By: Terri Clements/Donna Fulton (pinonbistro)
2017-05-11 20:38:02 SAST (+0200)
brunnea has pale brown ridges and pale brown pits when young
By: Debbie Viess (amanitarita)
2017-05-11 19:41:36 SAST (+0200)

rather than white ridges or gray ridges.

but the ridges are always brown, whether pale when young or dark in maturity.

how many brunnea have you collected in AZ, Teri?

we are only now going back to find our CA examples here on MO, after Alan DNA determined a few of his collections and proved that it occurred in CA, as well as the PNW.

brunnea occurs w/both hardwoods and conifers; eohespera w/conifers.

These are not
By: James D'andí (TSD)
2017-05-11 05:32:57 SAST (+0200)

M. tridentina. When I made the comment about hardwoods, I was referring to M. brunnea. When I elaborated about the difference in ridge color from young to old, I was referring to M. brunnea.

Here is a collection of M. tridentina from Sunday:


I see nothing dark about these ridges
By: Terri Clements/Donna Fulton (pinonbistro)
2017-05-11 04:26:16 SAST (+0200)

There is an overall grayish cast which is typical of M. tridentina under some conditions. These are very typical of M. tridentina I have seen. for some very good photos and macro description I suggest Lozides et al 2015.

under Pinus
By: James D'andí (TSD)
2017-05-11 04:20:58 SAST (+0200)

I know of two species that happily fruit under pinus in the Cascades, and after having a collection sequenced I know that the smaller species that is commonly called a “brush morel” – which fruits in unburned and older burned forests alike, is M. brunnea. Now I’m wondering which species is M. eohespera.

The young specimens will have light ridges when young and with less sun exposure. Forgive me but these are nothing like M. tridentina at all, which when young can be grayish when shielded from sunlight, but are never really dark at all, and are generally very pale even when young.

No, not just with hardwoods
By: Terri Clements/Donna Fulton (pinonbistro)
2017-05-11 04:08:09 SAST (+0200)

It has been DNA documented under a stand of pure ponderosa pine in a burn area 2 years after the burn. But this doesn’t look like M. brunnea whose ridges are dark brown to almost black and blackening in maturity. This looks more like M. tridentina with its densely packed splitting ridges and overall grayish yellow coloration.

By: James D'andí (TSD)
2017-05-11 03:38:57 SAST (+0200)

Isn’t this species described as being a hardwood associate?

Created: 2013-05-29 06:26:13 SAST (+0200)
Last modified: 2017-05-11 19:42:14 SAST (+0200)
Viewed: 112 times, last viewed: 2017-06-16 07:27:08 SAST (+0200)
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