Observation 77443: Panaeolus cyanescens group

When: 2011-09-27

Collection location: Chambers Co., Alabama, USA [Click for map]

Who: ness

No specimen available

Images

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Proposed Names

-28% (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.
57% (1)
Eyes3
Recognized by sight: Due to the thin, strongly bluing stem. Panaeolus cinctulus would have a thicker stem which does not bruise much at the apex. The caps are dark on this rather mature collection, that might be significant or it might be common in this species.
Based on microscopic features: If the spores are 12 to 15 microns they are Panaeolus cyanescens according to the key in Gerhardt 1996, if smaller, more microscopy is needed.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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gills and stems
By: ness
2011-09-27 17:20:11 CDT (-0500)

Black gills and damaged stems. Will take a spore print soon.

Picture of the gills and stem?
By: Byrain
2011-09-27 16:59:32 CDT (-0500)

Do you have any? Spore print color would help too.

Created: 2011-09-27 16:42:52 CDT (-0500)
Last modified: 2017-10-11 12:27:13 CDT (-0500)
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