When: 2014-06-09

Collection location: LaBagh Woods, Chicago, Illinois, USA [Click for map]

Who: Rocky Houghtby

Specimen available

On hardwood

7.45 X 4.02, minute germ pore. Yellowish- hyaline in H2O, brown in KOH.

51.86 X 14.34, hyaline in H2O, brown in KOH.

33.16 X 14.5, versiform, ranging from pyriform (sub-globose) to sphaeropedunculate to utriform. Hyaline in H2O, becoming textured in NH4OH and darkening from yellow to tawny in KOH.

none observed in 15 gill sections.

rare at the apex, more or less like the pileocystidia. Most hyphae ending in undifferentiated cells.

Lamellar trama
sub-parralel, inflated

Pileus trama
interwoven, inflated hyaline cells interspersed with thinner clamped hyphae that are yellow in KOH. inflated hyphae measuring 11-13 microns wide.

composed of interwoven inflated chains of hyphae arranged anticlinally to the trama, a trichodermal epithelium. cinnamon in masse, darker in KOH. Terminal cells clavate-lecythiform with a minute rounded apex, asperulate, nearly hyaline in H2O, Darkening significantly in KOH.



Proposed Names

31% (3)
Recognized by sight: Section Flavidula
-1% (2)
Recognized by sight
60% (2)
Recognized by sight: small appendiculate, dry, squamulose, naucorioid fungus on wood
Used references: http://www.mykoweb.com/...
Based on microscopic features: non-gelatinous trichoderm with inflated cells, spore size, trama arrangements, no pleurocystidia, cheilocystidia size shape and reaction to KOH, macro morphology.
28% (1)
Used references: http://www.mykoweb.com/...
Based on microscopic features: Pretty much microscopically identical to P. granulosa.
28% (1)
Used references: http://www.mykoweb.com/...
Based on microscopic features: Pretty much microscopically identical to P. granulosa

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

= Observer’s choice
= Current consensus


Add Comment
Thanks, Martin
By: Rocky Houghtby
2014-06-11 22:18:04 CDT (-0400)

The largest shroom in this collection was 2cm, the largest Ive collected in the past was 3cm. The lamellae were attached with a notch. I learned most of my myco vocabulary from various monographs, the internet and Largent’s book on Microscopic features. I have a lot more to learn.

The reason I proposed P. proximans and P. curcuma is that they are both microscopically identical and morphologically similar. They might be the same mushroom for all I know. I might never know, I hear that umich is super stingy with their types…

Nice work, Rocky!
By: Martin Livezey (MLivezey)
2014-06-11 19:41:51 CDT (-0400)

What reference material do you use for those $20 descriptive terms? This collection is similar, but different, from the majority of submissions for this name. It is bigger, with a heavier and tapered stipe. The gills seem to get deeper as they move toward the stalk. But the margin and cap are typical. Are the gills attached to the stem?

Just curious, why did you add the last two names and stick with P. granulosa?

Here is the first thing I called P. granulosa…,

I have not spent
By: Martin Livezey (MLivezey)
2014-06-10 21:33:05 CDT (-0400)

much time with Smith’s work. I did just scan the observations in MO with the same name…, If someone can make sense of that, then they should get to it! What an incredible range of types.

By: Rocky Houghtby
2014-06-10 21:25:05 CDT (-0400)

Thank you, Martin. This observation probably represents a species from Smith’s subgenus Flavidula.

By: Martin Livezey (MLivezey)
2014-06-10 21:14:31 CDT (-0400)

Are you aware of this website?

By: Rocky Houghtby
2014-06-10 20:15:24 CDT (-0400)
By: Parker V
2014-06-10 20:07:52 CDT (-0400)

Created: 2014-06-10 19:16:58 CDT (-0400)
Last modified: 2015-03-30 08:37:13 CDT (-0400)
Viewed: 202 times, last viewed: 2019-07-14 23:59:23 CDT (-0400)
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