Observation 103720: Gymnopilus aeruginosus (Peck) Singer

When: 2012-08-02

Collection location: Gainesville, Florida, USA [Click for map]

Who: Richard Kneal (bloodworm)

Specimen available

spores: 7.2 × 4.6


spores (oil)
spores (oil)
spores (oil)
cheilocystidia & basidioles (400x)
cheilocystidia & basidioles (400x)
cheilocystidia & basidioles (oil)
cheilocystidia (oil)
cheilocystidia (oil)
cheilocystidia (oil)
pleurocystidia (oil)
pleurocystidia & basidioles (oil)
pleurocystidia (oil)
gill trama (400x)
pileipellis (400x)
caulocystidia (400x)
caulocystidia (400x)
pileus trama (400x)
pileus trama (400x)
pileus trama (400x)

Proposed Names

-6% (3)
Recognized by sight
-23% (3)
Recognized by sight

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Doc850
2018-03-18 12:21:54 MST (-0700)

Contribution, keep up the good work.

thanks Donald!
By: Richard Kneal (bloodworm)
2012-08-06 05:54:33 MST (-0700)
Nice photography
By: good luck 2U (donaldjohnston)
2012-08-06 04:00:56 MST (-0700)
don’t I…
By: Leighton Bankes (paducahovoids)
2012-08-05 22:32:51 MST (-0700)

look like a friendly guy? I am :)

certainly he did..
By: Leighton Bankes (paducahovoids)
2012-08-05 22:31:09 MST (-0700)

a fine job, but his own microscopy led away from his own ID, IMO. I’m confidennt that in less than an hour one could find a species known to be active, known to grow in his area, in the right season with the proper size spores and “sub parallel” (parallel) lamellar hyphae…jealous that I wrote the description (here) and have the 4th listing down for Gymnopilus validipes if you google it. Also love me hate me, I referenced everything said in the comments here :) Hard to be a troll with that sort of accuracy. Maybe I’m abrasive, but that’s irrelevant

jealous of what exactly.
By: Britney Ramsey (Riverdweller)
2012-08-05 18:53:48 MST (-0700)

I’d say Richard has met your arguments against his id with as much proof as he could gather. This is an excellent example of an observation,certainly a level of competence to be proud of.

I would have left you alone
By: Leighton Bankes (paducahovoids)
2012-08-05 18:15:47 MST (-0700)

you trolled my post first. Note after you and your little buddy conspired to change the name based on your jealousy, Walt re-visited the observation and voted your suggestion “unlikely”, but you just went on and on, no?. I just wanted you to realize I also can ignore facts and continue to argue redundantly. Where you are from someone who is on the shroomery and on here is a punk? A lot of punks, I guess. Debbie, I apologize. I won’t bother chiming in on bloodworm(?)‘s observations any more. He did the exact same crap to me here;
where I’m from, that’s the pot calling the kettle black

pileus trama added…
By: Richard Kneal (bloodworm)
2012-08-05 14:53:56 MST (-0700)
By: Richard Kneal (bloodworm)
2012-08-05 14:25:35 MST (-0700)

there is no squabbling really…
he’s just a troll.
he was on the shroomery and he is on here.
where i’m from we call that a punk.

on another note…
i am definitely keeping them and hopefully i can get them to someone to sequence.
i am 95.7% certain these are aeruginosus…

now, i’m working on these:


i’m going to contact Matt Smith at UF and see if i can get some of Murrill’s type Gymnopilus species for comparison.

save it.
By: Debbie Viess (amanitarita)
2012-08-05 14:13:59 MST (-0700)

and contribute this sighting to the NA Mycoflora. They’ll do the DNA, once the funding has been made available, and we can chill on at least some of the taxo-squabbling that takes place here.

BTW, thanks for taking the high road and destroying that last post, Bloodworm. Sometimes, it can be hard not to hit that send button.

By: Richard Kneal (bloodworm)
2012-08-05 13:14:54 MST (-0700)

subparallel (comparative more subparallel, superlative most subparallel)
Almost parallel, but diverging or converging slightly
that is exactly what you are looking at.

even if they
By: Leighton Bankes (paducahovoids)
2012-08-05 13:11:50 MST (-0700)

were “sub parellel” that’s not interwoven=not aeruginosa. Also, It’s the wrong season and the spores are too small :(

@ byrain
By: Leighton Bankes (paducahovoids)
2012-08-05 13:09:39 MST (-0700)

1. http://www.cybertruffle.org.uk/...
more momentarily
@ bloodorm, subparellel? Look parellel to me, also it’s not even the right season for aeruginosis, according to Stuntz & Isaac

agreed RD…
By: Richard Kneal (bloodworm)
2012-08-05 13:06:15 MST (-0700)

also, paducahovoids…
speaking of mistakes…


how about spell check??

I vote for
By: Britney Ramsey (Riverdweller)
2012-08-05 12:58:00 MST (-0700)

waiting for those links.

the gill trama…
By: Richard Kneal (bloodworm)
2012-08-05 12:51:00 MST (-0700)

is composed of subparallel hyphae…
the pileus trama is interwoven.
if you look closely at the picture of the pileipellis, you can clearly see interwoven hyphae to the left…
you cannot see every detail because of the magnification.
i can scope it and show it to you if you would like…

By: Byrain
2012-08-05 12:48:09 MST (-0700)

Can you link these 5 articles? I would like to read them, thanks.

ok how about this
By: Leighton Bankes (paducahovoids)
2012-08-05 12:36:43 MST (-0700)

your microscopy clearly depicts parellel lamellar hyphae, but stunz and Isaacs indicate interwoven lamelllar hyphae for G. Aeruginosa…http://www.cybertruffle.org.uk/...
also Hesler is well known for making poor spore measuremenfs. I could site 5 articles that say his measurements were erronous,(after measuring the exact herbinarium specimens) better go with Stuntz & Issacs description, linked in the MO description, it’s what all the cool kids are using :)

“I’m not trying to bust your balls….”
By: Britney Ramsey (Riverdweller)
2012-08-05 12:15:37 MST (-0700)

oh but you are.

Gymnopilus aeruginosus…
By: Richard Kneal (bloodworm)
2012-08-05 12:01:58 MST (-0700)

has a spore range of 6-8.5 (-9) x (3.5-) 4-4.5. -Hesler
the spore shape, cheilocystidia, rare pleurocystidia, caulocystidia in tufts, gill trama, pileipellis and brown basidioles are also spot on for G. aeruginosus.
u really need to start doing better research.

I have to agree, very nice work up!
By: Leighton Bankes (paducahovoids)
2012-08-05 11:52:07 MST (-0700)

I’m not trying to bust your balls…..but; of the 10 spores you measured, only 3 meet the bottom range of G. aeruginosis in length (Mycologia 54, pg 282, 7.5-9×4-5.5) the average of your sample is 7.2 um x 4.612 um. all but 1 of those fall in the range of G. subtropicus(mycotaxon 54, pg 120 [6-7.6um]) I am aware of the apparent lack of cystidia in subtropicus, with that in mind, it must be neither species mentioned, IMO. I’m no microscopist

great news.
By: Debbie Viess (amanitarita)
2012-08-05 10:52:47 MST (-0700)

you will be helping to fill a huge gap.

thanks RD and Debbie!!
By: Richard Kneal (bloodworm)
2012-08-05 10:18:09 MST (-0700)

i am working on starting a Gainesville Mycological Society as well as a website.
i plan to dedicate one site to Gymnopilus and the GMS page will be loaded with useful local information regarding fungi.

thanks again!!

nice documentation. keep up the good work.
By: Debbie Viess (amanitarita)
2012-08-05 09:55:03 MST (-0700)

maybe set up your own website on Florida fungi? There are not a lot of centralized options for folks wanting to learn about the local fungi.

Go Blood!
By: Britney Ramsey (Riverdweller)
2012-08-05 07:45:49 MST (-0700)

Show ‘em what you’re working with! Nice observation and workup!

By: Richard Kneal (bloodworm)
2012-08-05 07:05:21 MST (-0700)

updated, just for you!

microscopy added.
By: Richard Kneal (bloodworm)
2012-08-04 15:57:49 MST (-0700)
i have…
By: Richard Kneal (bloodworm)
2012-08-04 11:49:26 MST (-0700)

read the reports of apparent activity of G. subtropicus and as far as i know there is no concrete evidence of it’s activity.
microscopy of this specimen may prove otherwise…
i do agree that macroscopically it fits G. subtropicus, which is why i proposed the name.

By: Richard Kneal (bloodworm)
2012-08-04 11:36:28 MST (-0700)

don’t see any bluing on that observation and it is not reported to be active.

from “North American Species of Gymnopilus” – Hesler

Gymnopilus aeruginosus

Pileus cespitose, 2-5 (more rarely 6-23) cm broad, convex, dry, at first dull bluish gray-green, or aeruginous to variegated green and yellow, at times with patches of salmon or livid red, becoming “warm-buff” to “pinkisk buff,” or at time brown or drab, especially when dried, fibrillose-scaly, becoming rimose-areolate, each areola with 2-8 cushion-like to fibrillose scales, or sometimes squamulose without areolae, the scales tawny or blackish, margin even. Context pallid or whitish, tinged greenish, or dull bluish green, when dry becoming yellowish to vinaceous; odor mild, taste bitter.

Lamellae adnexed to adnate, often at first decurrent bya line, frequently seceding, “cream-buff” to “pale ochraceous orange,” broad to medium broad, crowded or close, lamellulae numerous, edges even to slightly rough.

Stipe 5-12 cm long, 10-15 mm thick, concolorous, appressed-fibrillose or glabrous, dry, sometimes striate, solid, becoming more or less hollow, at times 3-8 connate at base, equal. Veil arachnoid, yellowish, slight fugacious, leaving an apical evanescent zone.

the greenish tinge is apparent on the caps.
they are still rather young.
in my experience, it takes some time for the cap color to become apparent.
i bet if i placed them in the refrigerator for a day or so the caps would change.
i will report back with more photos as they mature more.

Stunz & Isaacs description
By: Leighton Bankes (paducahovoids)
2012-08-04 11:15:14 MST (-0700)

http://www.cybertruffle.org.uk/... Is what I was going off of, in MO’s description page.
Landsnorklers. G. Subtropicalis observation (the only one besides yours) is definately bluing and found in HI
thiers herbinarium specimens of subtropicus :) http://sweetgum.nybg.org/...

By: Richard Kneal (bloodworm)
2012-08-04 08:34:07 MST (-0700)

this observation is bluing.
Gymnopilus subtropicus is not known to be active.
also, where are you obtaining this information on Gymnopilus aeruginosus and subtropicus??

flamboyant colors??
By: Richard Kneal (bloodworm)
2012-08-04 07:42:39 MST (-0700)


this observation will be updated with microscopy, just for you!

obviously a gymnopilus
By: Leighton Bankes (paducahovoids)
2012-08-04 07:40:34 MST (-0700)

but lacks any of flamboyant colors in the descrition of G. aeruginosus

Created: 2012-08-02 18:00:16 MST (-0700)
Last modified: 2018-03-18 12:21:55 MST (-0700)
Viewed: 683 times, last viewed: 2018-06-09 10:58:24 MST (-0700)
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