Observation 10098: Agaricus L.

When: 2008-08-26

Collection location: Santa Fe, New Mexico, USA [Click for map]

35.691° -105.9186°

Who: Danny Newman (myxomop)

No specimen available

Found growing under amidst juniper and pinyon pine in pecan shell mulch.

[admin – Sat Aug 14 02:05:39 +0000 2010]: Changed location name from ‘Santa Fe, New Mexico’ to ‘Santa Fe, New Mexico, USA

Species Lists



Proposed Names

6% (3)
Recognized by sight: pink gills, terrestrial, annular ring, chocolate brown spores, white convex to plane cap, beneath pinyon pine
Used references: Mushrooms Demystified
74% (2)
Eye3 Eyes3
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Agaricus pinyonensis
By: Danny Newman (myxomop)
2009-12-09 09:41:48 CET (+0100)

I found it only in the MD Agaricus key and, I believe, in an online or printed (can’t remember) key from the NMMS. Someone in New Mexico is responsible for the naming, to be sure.

RE: Douglas
The most fantastic, awe-inspiring, beautiful mushroom hunts I have ever had have taken place in those 6-8 weeks in the mountains above my family’s home in Santa Fe. This little one was found during that particular window.

Where is the Author?
By: Eddee (eddeeee)
2009-12-09 08:27:28 CET (+0100)

IM sorry I can not find an author or a citation on this on name, It is not listed in Fungorum or any where else i can find.

Not so xeric…
By: Douglas Smith (douglas)
2009-01-18 05:21:37 CET (+0100)

I lived in Santa Fe in my previous life, and it isn’t so xeric in August-Oct. The months before the snows come in, there is a rain/thunder storm pretty much every day. And all the fungus come out in this short season, they are everywhere for 6-8 weeks, and then they aren’t there at all for the rest of the year. Even though, I didn’t find this one, I didn’t look much under Pinyon, I spent most of my time at the high elevations in the pine/spruce/fir/aspen forests. More stuff up there…

nice…did you eat it?
By: Debbie Viess (amanitarita)
2009-01-18 05:02:58 CET (+0100)

the edible agaricus species are some of my favorites, altho i’ve never seen (or eaten) this one…apparently associated with pinyon pine and juniper (as you noted). prob. not “MR” with pecan shells either, but rather an opportunistic saprobe, seeking suitable shaded habitat.

nice to find cool shrooms in such a xeric environment. I was gonna mention this isn’t supposed to be when they fruit, but then i saw your sighting date, in August.

By: Christian (Christian Schwarz)
2009-01-18 02:54:54 CET (+0100)

As I understand it, A. pinyonensis is a saprobe with a strong host preference for Pinyon, but it is not mycorrhizal with Pinyon. Have I missed results showing otherwise?

Created: 2008-08-27 04:07:19 CEST (+0200)
Last modified: 2018-09-17 21:06:23 CEST (+0200)
Viewed: 425 times, last viewed: 2018-11-10 20:28:07 CET (+0100)
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