Mycena "inclinata-IN01"

Growing alone at times but usually in small to numerous clusters on often well decayed hardwood logs. There is one reports of them growing on Rhododendron and one observation notes that the forest contains Asimina sp, Quercus sp, and Carya sp. The mushrooms themselves vary in color with caps that can be white, brown, brownish, yellow stained, or a gradient of all three. The stem often a gradient with a shade of yellow being the middle gradient color between the pale colored apex and darker stem base. Sometimes with yellow being the dominant stem color. KoH negative on the cap. The caps measure 5-20mm wide with the tooth-like overhanging material on the cap margin. Stems 10-50mm long and reportedly 1-3mm wide. Spores are white N=14 Me=8.6x6.1µm Qe=1.4. Pileipellis with diverticulated elements. Odor is described as mealy, cucumber, foul, bleach-like, farinaceous, or of watermelon rind. Most commonly it is referred to as like cucumber. They appear to grow in the middle to upper east coast USA including the Midwest from May - December but with the greatest numbers in October. There is reportedly a possible UV reaction but no photos at this time. [1]

raw data:

Seasonality:

May through December

Odor:

Cucumber https://www.inaturalist.org/observations/15950025

Cucumber https://www.inaturalist.org/observations/188599000

Mealy to foul https://www.inaturalist.org/observations/184708012

Watermelon rind to bleach-like https://www.inaturalist.org/observations/162861525

Bleach https://www.inaturalist.org/observations/145208948

Farinaceous https://www.inaturalist.org/observations/145192682

Cucumber https://www.inaturalist.org/observations/145149080

Cucumber https://www.inaturalist.org/observations/145149120

Substrate:

Hardwood

https://www.inaturalist.org/observations/252403297

"Hardwood" https://www.inaturalist.org/observations/16472927

"Well decayed hardwood" https://www.inaturalist.org/observations/188741500

hardwood https://www.inaturalist.org/observations/188553749

Growing clustered on fallen hardwood log on East-facing slope under paw paws in mixed oak/hickory woodland. https://www.inaturalist.org/observations/179067225

on hardwood https://www.inaturalist.org/observations/163461067

On well rotted hardwood. https://www.inaturalist.org/observations/162861525

Rhododendron https://www.inaturalist.org/observations/161550428

in hollow of hardwood stump https://www.inaturalist.org/observations/139149870

In moss on a hardwood https://www.inaturalist.org/observations/49297196

Size:

https://www.inaturalist.org/observations/16472927

Largest caps are between 1.5 and 2 cm, smallest are .5 cm or less. Longest stipes are 4 and 5 cm long, shortest are 1 cm. Most stipes are 2 mm, some can be 1 mm wide. https://www.inaturalist.org/observations/188553749

ruler pictured https://www.inaturalist.org/observations/188467697

ruler pictured https://www.inaturalist.org/observations/188074248

KoH negative:

https://www.inaturalist.org/observations/188036587

https://www.inaturalist.org/observations/184708012

https://www.inaturalist.org/observations/235116371

@lothlin mentions variability under this temp code:

https://www.inaturalist.org/observations/185632051

Yellow stains and 365nm uv mention but no photos:

https://www.inaturalist.org/observations/184708012

Possible UV photo:

https://www.inaturalist.org/observations/138921884

Microscopy

No measurements

https://www.inaturalist.org/observations/239963722

pileipellis with diverticulated elements, N=14 Me=8.6x6.1µm Qe=1.4

https://www.inaturalist.org/observations/247944902

no measurements or labels: https://www.inaturalist.org/observations/16472927

spore print

white pictured https://www.inaturalist.org/observations/248267819

Very dark presentation

https://www.inaturalist.org/observations/189306656

Highest RiC sequences

488 RiC https://www.inaturalist.org/observations/139149870

488 RiC https://www.inaturalist.org/observations/184638128