When: 2010-09-20

Collection location: 19th Ave. and Lincoln Way, San Francisco, California, USA [Click for map]

Who: Adam Singer (adam)

No specimen available

Found on a slight hill in dirt/grass, where water was dripping down onto the sidewalk near the 2 clusters of unknown fungi. Spore print is black. While they don’t deliquesce (maybe the edges a little this morning), I keyed these out to Coprinus micaceus based on the striations on the cap, the fact C. micaceus doesn’t always deliquece, and the glistening particles that I see under a lens but MD says the cap would be tawny, whereas mine are green gray. There were several other possibilites I keyed out to, but am unsure.


Edit: sorry about the gill color – they are, as Alan said, definitely not blue. They are more dark gray. The cap is gray/greeen and as it dried developed whitish speckling along the ridges. I will post my outdoor shot even though it is blurry as the colors should be more accurate as it was taken while they were still in the ground and with fair, outdoor light.


Copyright © 2010 Adam S.
Copyright © 2010 Adam S.
Copyright © 2010 Adam S.
Copyright © 2010 Adam S.
Sorry it is out of focus – posting to show color in outdoor light and while still in ground.

Proposed Names

-39% (2)
Used references: Mushrooms Demystified
72% (3)
Used references: MykoWeb
Based on microscopic features: spores heart to apple shaped, with a conspicuous hilar appendage, they do not have a conspicuous apical pore like auricoma

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= Observer’s choice
= Current consensus


Add Comment
Parasola sp.
By: Europe-coprinologist
2011-10-25 12:19:20 CDT (-0400)


With heart-shaped spores must go to the hood genre Parasola.

But we must also know specie, the size to differentiate, leiocephala, schoeteri, kuehneri, plicatilis, lilatincta ….. all have lentiform spores.

Spore size you say?

the tiny reflective dots are not the mica?
By: Adam Singer (adam)
2010-09-21 17:04:36 CDT (-0400)

Per mykoweb on Parasola auricoma “Compare also with Coprinellus micaceus, a more robust species which is similarly colored but has glistening cap granules when young.” Mine seemed to have little glistening dots that I figured were mica granules (haven’t seem them before so maybe this is just specs of silcate dirt and the mica effect is something more pronounced). Also the thing is still intact in my fridge whereas mykoweb says “the fruiting bodies typically developing and senescing within a day.” Lastly the color of those Parasola auricoma that I found online was usually brown, these are only brown near the tops as they dried out but the bulk is green/gray.


By: Alan Rockefeller (Alan Rockefeller)
2010-09-21 16:09:47 CDT (-0400)
Do these really have
By: Paul Derbyshire (Twizzler)
2010-09-21 16:04:37 CDT (-0400)

blue gills?