Observation 272162: Chlorophyllum brunneum (Farl. & Burt) Vellinga

When: 2017-03-11

Collection location: Mission Trails Regional Park, San Diego, California, USA [Click for map]

Who: Cindy Trubovitz (Trubo)

No specimen available

Flesh and stalk interior turned reddish when sliced. The stalk exterior is dark most likely from maggots inside.

Proposed Names

-25% (5)
Recognized by sight: Dark squamules on cap

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
added a pic
By: Cindy Trubovitz (Trubo)
2017-03-20 11:38:58 PDT (-0700)

I had added this pic to iNaturalist and neglected to add to MO, sorry. Didn’t realize until now the importance of this characteristic and more photos may help. Thanks Noah for clarifying the differences and posting those great pics! I see how my pic looks like a double with a “hanging down” part but looks very membranous or at least very different from the fluffy sticky up part.
Thanks Debbie for posting that article..I was searching online for info and not very successful, so I really appreciate that.

By: Noah Siegel (Noah)
2017-03-20 10:11:30 PDT (-0700)

the “simple” veil of C. brunneum

The double veil of C. olivieri

The complex/double veil of C. rachodes

By: Noah Siegel (Noah)
2017-03-20 09:48:37 PDT (-0700)

I think many people have trouble understanding the “double veil” meaning, and misinterpret the “simple” veil on C. brunneum as a double veil, because it has a membranous part (near stipe), and a more floccose part near the cap margin.

The “double veil” species (Vellinga refers to it as “annulus complex, with double crown”) have a collar of tissue extending down (like rachodes and olivieri)

Roughly like this: (ignore the dots in the “stipe”, need then there for spacing)


In addition, the scales on brunneum really stand out, when compared to olivieri, where they blend into the cap color. Slightly different texture, and stature, too.

or yours, Noah.
By: Debbie Viess (amanitarita)
2017-03-20 09:17:02 PDT (-0700)
please detail your reasoning here, Jacob.
By: Debbie Viess (amanitarita)
2017-03-20 08:51:48 PDT (-0700)

what I am seeing in these photos is a Chlorophyllum with a double ring, and abrupt bulb and a darkish background to the cap. The double ring eliminates brunneum; the abrupt bulb eliminates rachodes. The cap color/ornamentation is a bit ambiguous, but IMO the preponderance of features indicates olivieri.
Altho olivieri is primarily a northern sp., mushrooms do move around in space and time

Here are full descriptions of all of the possible Chlorophyllum species here in the West, from the PNW key council:


Oh well,
By: Cindy Trubovitz (Trubo)
2017-03-19 21:04:40 PDT (-0700)

fun while it lasted:)

Sorry Cindy…
By: Jacob Kalichman (Pulk)
2017-03-19 20:31:11 PDT (-0700)

You haven’t found a different Chlorophyllum.

Thank you Debbie!
By: Cindy Trubovitz (Trubo)
2017-03-19 11:38:15 PDT (-0700)

I really appreciate your responding and clarifying the differences of those 2 species:) It is exciting to have found a different Chlorophyllum and I will have to examine more closely in the future now, so cool.
Oh yes, I’ve never seen Anza Borrego so beautiful! We have recently returned as well and are going back this weekend to explore more and spend the night.

hi Cindy
By: Debbie Viess (amanitarita)
2017-03-19 10:27:21 PDT (-0700)

It is not the dark scales on the cap that makes this olivieri, but rather the dark (at least not pure white) background of the cap in contrast to its scales. also, olivieri has a double ring; the similar sp. brunneum has a single ring.

interesting that this primarily PNW species is showing up as far south as San Diego!!! It was a great year for Chlorophyllums here in the BA as well. We do now see C. olivieri in the BA, esp. the Santa Cruz area, but those have been introduced and only quite recently.

It’s a fabulous time to head a bit east of you, too. We just returned from Anza Borrego, where the desert bloom and bloom related wildlife was beyond spectacular.

C. oliviera?
By: Cindy Trubovitz (Trubo)
2017-03-18 22:20:40 PDT (-0700)

I had posted this observation also on iNaturalist and a couple identifiers responded with C. oliviera. I’m not seeing the differences so much with the cap but the stalk does seem longer than the C. brunneum I’ve seen in the past.

Created: 2017-03-14 19:45:46 PDT (-0700)
Last modified: 2017-03-20 11:12:33 PDT (-0700)
Viewed: 171 times, last viewed: 2018-04-19 03:57:58 PDT (-0700)
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