Observation 56160: Panaeolus subbalteatus (Berk. & Broome) Sacc.

When: 2010-08-03

Collection location: Hamlin Park, Shoreline, King Co., Washington, USA [Click for map]

Who: Tim Sage (NMNR)

No specimen available

Species Lists


Top left print is from Panaeolus foenisecii

Proposed Names

47% (4)
Used references: Jet black spores
57% (1)
Recognized by sight: The species concept of Agaricus (Panaeolus) cinctulus is based on a drawing made by Bolton in 1791. No type collection exists. Since it is not possible to know whether Bolton’s species was Panaeolus subbalteatus, P. olivaceus or P. fimicola, I consider Panaeolus cinctulus to be a nomen dubium.
Based on microscopic features: The gill faces need to be checked for sulphidia; the presence of these would indicate that it is probably Panaeolus fimicola.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Spore photo added
By: Tim Sage (NMNR)
2010-10-21 13:55:09 MST (-0700)

Photo added.

I think that is a myth
By: Tim Sage (NMNR)
2010-10-21 13:49:52 MST (-0700)

I will see if I have a pic of the spores, but I believe it is a myth about the gills not extending below the margin in this species.

They were jet black, I assure you.

Gills seem too far below the margin in a couple of images?
By: jexter
2010-10-21 13:44:45 MST (-0700)

I’m no expert, but in the second to last image, it looks like the gills are extending well below the margin, which seems somewhat uncharacteristic. A spore print image or description would help. Otherwise I’ll say it’s likely to be P. cinctulus.

Created: 2010-10-20 21:17:16 MST (-0700)
Last modified: 2013-12-14 14:22:58 MST (-0700)
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