Observation 79752: Coprinopsis lagopus (Fr.) Redhead, Vilgalys & Moncalvo

When: 2011-10-09

Collection location: Between the Shorebird Nature Center and University Ave. in the Berkeley Marina, Alameda Co., California, USA [Click for map]

37.863121° -122.315618°

Who: EricaMagill

Specimen available

There seems to be much confusion about the genus Coprinus and what mushrooms now fall into the genus Parasola, etc. But, based on research that I’ve done on this site, mushroomexpert.com and mykoweb.com, I think that the best classification for this little guy is Parasola leiocephala. The collection that I found was growing in wood chips and not on grass, which seems to be the sole habitat for P. plicatilis. Moreover, according to mykoweb.com, P. leiocephala is the dominant species here in the SF Bay Area. Although I sadly didn’t collect any young specimens, the ones that I have to identify have the following characteristics:
-Translucent, pale gray and striate cap with a brownish disc
-In maturity the cap breaks up radially (in a star-like pattern)
-No evidence of veil fragments
-Gills are free, autodigesting but no deliquescing
-Stipe is thin, fragile, whitish, translucent and slightly tapering upward (i.e. a slightly larger base than top)
-The spores are smooth and elliptical (perhaps could be considered slightly angular) and have a conspicuous germ pore
-Dried specimen is part of a personal collection temporarily held at UC Berkeley


Spores at 100x magnification
Two that inked together!
This picture was taken several days after the first few pictures. After having been rightfully corrected on the genus and species name, I went back to the site that I first collected at, and found it littered with these guys. When I looked closely I realized that there tons of little ones nearly bu...
A close-up of a few young specimens I dug out of the wood chips.

Proposed Names

-24% (2)
Used references: mykoweb.com, mushroomexpert.com
Based on microscopic features: Spores are smooth with a conspicuous germ pore

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
You’re Right!
By: EricaMagill
2011-10-20 23:10:41 CDT (-0500)

Thank you so much for the correction. I obviously missed the veil fragments. I went back to the same site today to see what I could find and there were tons of these – both mature and immature – lying around. The young ones were so close to the wood chips that I almost missed them! Thankfully I was able to see dig them out and see that they are in fact covered in a sticky veil.

Thanks again for your comment, it really cleared up some confusion for me!

Coprinopsis lagopus group
By: else
2011-10-17 20:07:43 CDT (-0500)

Parasola species do not have a veil, they have smooth caps, smooth stipes, no long cells sticking out. nothing.
This one has clearly stuff on the stipe.
Parasola’s also do not curl up like this one. they just shrivel…..

Created: 2011-10-17 18:33:02 CDT (-0500)
Last modified: 2011-10-20 23:05:52 CDT (-0500)
Viewed: 119 times, last viewed: 2018-07-10 18:36:26 CDT (-0500)
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