Observation 96951: Panaeolus cinctulus (Bolton) Britzelm.
When: 2012-05-05
Who: Byrain
No herbarium specimen
0 Sequences

Growing in a grassy field next to a duck/geese pond and near Platanus racemosa.

Cheilocystidia was sparse and hard to find, maybe it is because I left these to dry and forgot about them for a while.

Smooth spores, some have an oblique germ pore in the side view.
Spore range = 13 – 15 (17) x 7 – 9 (10) µ
Average spore = 14.07 × 8.2 µ
Average Q = 1.73
15 spores measured.


Spores, 1000x, mounted in KOH, 1 µ divisions
Cheilocystidium, 1000x, mounted in KOH, 1 µ divisions
Pileipellis, 1000x, mounted in KOH, 1 µ divisions

Proposed Names

85% (1)
Eye3 Eyes3
Recognized by sight
Used references
Based on microscopic features
-16% (2)
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


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Created: 2012-06-10 13:18:59 PDT (-0700)
Last modified: 2014-01-21 14:35:11 PST (-0800)
Viewed: 336 times, last viewed: 2017-12-10 12:41:35 PST (-0800)
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