Observation 34557: Gastrocybe Watling

When: 2010-03-03

Collection location: Anza Borrego State Park, San Diego Co., California, USA [Click for map]

Who: Debbie Viess (amanitarita)

Specimen available

Found in a damp and greening section of desert riverbed, growing near willow and inky caps. This was the “hot” find of the week!

Deposited at SFSU Thiers Herbarium.

[admin – Sat Aug 14 01:57:54 +0000 2010]: Changed location name from ‘Anza Borrego State Park, San Diego CO, CA’ to ‘Anza Borrego State Park, San Diego Co., California, USA


pair of thick-walled mature spores in center of field.

Proposed Names

0% (2)
Recognized by sight: this looks to be a gastroid conocybe…tough cap, partially closed up at the base, bright brown spores, striate stipe, in grass.
31% (2)
Recognized by sight: Secotoid, brown spores
57% (1)
Eye3 Eyes3
Recognized by sight: at least that is how it is filed at SFSU Thiers herbarium…

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Shane Marsh (Mushane)
2010-03-09 16:44:11 PST (-0800)

definitely not a Panaeolopsis sp
I was sure having doubts about the Panaeolopsis specimens I found, but these make me feel more confident on my ID. if they indeed have brown spores then they are probably Galeropsis sp

thanks for contributing more pics of these, they are fairly undocumented

further study needed!
By: Debbie Viess (amanitarita)
2010-03-09 15:52:36 PST (-0800)

spores look similar to Galeropsis spores (from what fruit body, tho?) posted by Alan Rockefeller from another collection here:

also grossly similar to the Galeropsis desertorium bisporus pictured here: http://tinyurl.com/yzxlun6

But as to species? I don’t think we’re there yet!

And your conclusion
By: walt sturgeon (Mycowalt)
2010-03-09 14:53:38 PST (-0800)


this just in…
By: Debbie Viess (amanitarita)
2010-03-09 07:30:16 PST (-0800)

spores 1000x, in H2O and Meltzers. first photo mount of fertile surface with embedded, mostly immature spores.

most spores still immature, only largest measured. thick walled, hilar appendage, germ pore.
15 × 8.5
16 × 9
13 × 7
14 × 7
13 × 7
12 × 7
12 × 7
13 × 6
13 × 7.5
14 × 7
13 × 6
14 × 7

this was not a fragile-capped mushroom…
By: Debbie Viess (amanitarita)
2010-03-07 07:26:55 PST (-0800)

so I am leaning towards Galeropsis as the nearest fit for a genus…but if so, then it’s an undescribed species. will try and post microshots today.

Gastrocybe lateritia
By: walt sturgeon (Mycowalt)
2010-03-07 07:01:56 PST (-0800)

now, Conocybe deliqescens has intermediate forms or stages with Conocybe lactea. Conocybe deliquescens Hauskn. & Krisai

yes, but only grossly similar in cap color and general shape…
By: Debbie Viess (amanitarita)
2010-03-06 16:18:23 PST (-0800)

this mushroom lacked the soft texture and striate cap of a bolbitius, and had the striate stipe of a conocybe. believe me, I looked at every photo that I could find of secotioid fungi in the Bolbitaceae, and not one of ’em fit.

it is on my short to-do list for scoping….

Interesting find Debbie,
By: Michael W (Michael Wallace)
2010-03-06 16:07:28 PST (-0800)

It looks similar to the gasteroid Bolbitius species from Europe.
Bolbitius elegans

By: Noah Siegel (Noah)
2010-03-06 09:45:22 PST (-0800)

looks like a Panaeolopsis but with brown spores maybe a Galeropsis???

Created: 2010-03-06 07:23:37 PST (-0800)
Last modified: 2012-04-24 09:30:42 PDT (-0700)
Viewed: 969 times, last viewed: 2018-12-18 05:06:38 PST (-0800)
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