Stropharia pseudocyanea (Desm.) Morgan
(Peppery Roundhead)

Taxonomic hierarchy:
SpeciesStropharia pseudocyanea (Peppery Roundhead)
GenusStropharia (roundhead toadstools)
FamilySTROPHARIACEAE (a family of toadstools)
OrderAGARICALES (mushrooms and toadstools)
SubclassAGARICOMYCETIDAE (a subclass of basidiomycetes)
ClassAGARICOMYCETES (a class of fungi)
SubphylumAGARICOMYCOTINA (a subphylum of fungi)
PhylumBASIDIOMYCOTA (spore droppers, basidiomycetes)
KingdomFUNGI (true fungi)
DomainEukaryota (eukaryotes)
LifeBIOTA (living things)
Records of Stropharia pseudocyanea (Peppery Roundhead) :
1: Stropharia pseudocyanea (Peppery Roundhead) IDENTIFICATION UNCERTAIN
10 Oct 2006 OSGR: SK15 53° 0’ N, 1° 50’ W Vice County: Derby (VC 57) England
in basic grassland
Image 1: Fruitbody - lain down to show cap - pale backgroundImage 2: Fruitbody - lain down to show cap - pale background (2)Image 3: Fruitbody - lain down to show stipe and gills - pale background
2: Stropharia pseudocyanea (Peppery Roundhead) IDENTIFICATION UNCERTAIN
10 Oct 2006 OSGR: SK15 53° 0’ N, 1° 50’ W Vice County: Derby (VC 57) England
in semi-improved grassland
Image 1: Fruitbody - lain down - grey backgroundImage 2: Fruitbody - lain down to show cap - grey backgroundImage 3: Fruitbody - lain down to show gills and stipe - grey backgroundImage 4: Fruitbody - lain down to show gills and stipe - grey background (2)
3: Stropharia pseudocyanea (Peppery Roundhead)
21 Oct 2005 OSGR: SU56 51° 20’ N, 1° 20’ W Vice County: Berks (VC 22) England
2 fruitbodies, near Hawthorn, in species-rich short grassland . Photos: toadstool, close-ups, cheilocystidia, chrysocystidia, spores
Image 1: ArrangementImage 2: Cap - close-up - pale backgroundImage 3: Fruitbody - lain down to show gills - close-upImage 4: Gills - close-up - pale backgroundImage 5: Gills - close-up - enlargedImage 6: Cheilocystidia in gill edge - magnifiedImage 7: Cheilocystidia in gill edge - magnified (2)Image 8: Cheilocystidia in gill edge - magnified (3)Image 9: Cheilocystidia in gill edge - magnified (4)Image 10: Cheilocystidia in gill edge - magnified (5)Image 11: Cheilocystidia in gill edge - magnified (6)Image 12: Cheilocystidia in gill edge - magnified (7)Image 13: Chrysocystidia in gill face - magnifiedImage 14: Chrysocystidia in gill face - magnified (2)Image 15: Chrysocystidium in gill face - magnifiedImage 16: Spores - magnifiedImage 17: Spores - highly magnified
4: Stropharia pseudocyanea (Peppery Roundhead)
8 Nov 1998 OSGR: SU56 51° 20’ N, 1° 10’ W Vice County: Berks (VC 22) England
late-season washed-out specimens growing in garden
Image 1: CapImage 2: Cap - LSImage 3: Cap surface - close-upImage 4: Fruitbodies - 2Image 5: Fruitbodies - 3Image 6: Fruitbodies - growing clusteredImage 7: Fruitbody - LSImage 8: GillsImage 9: RingImage 10: StipeImage 11: Stipes - bases showing rings and young buttonsImage 12: Cap cuticle - magnifiedImage 13: Cheilocystidia in gill edge - magnifiedImage 14: Cheilocystidia in gill edge - magnified (2)Image 15: Cheilocystidia in gill edge - magnified (3)Image 16: Cheilocystidia in gill edge - magnified (4)Image 17: Cheilocystidia - magnifiedImage 18: Cheilocystidia - magnified (2)Image 19: Cheilocystidia - magnified (3)Image 20: Facial chrysocystidia - magnifiedImage 21: Facial chrysocystidia - magnified (2)Image 22: Spores - magnifiedImage 23: Spores - highly magnifiedImage 24: Spores - highly magnified (2)Image 25: Spores on hymenium - magnifiedImage 26: Spores - trapped in cap gluten - magnified

Identification Works

AuthorYearTitleSource
Kibby, G. 2010 Fungal portraits: No. 41: Stropharia caerulea and other green Stropharia species Field Mycology Vol 11 (1): 2-4.
Orton, P.D. 1976 Notes on British Agarics VI Notes from the Royal Botanic Garden, Edinburgh Vol 35 No 1: 147-154.

Stropharia pseudocyanea (Peppery Roundhead) may also be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Stropharia pseudocyanea (Peppery Roundhead)
BioInfoBioInfo (www.bioinfo.org.uk) has 1 host/parasite/foodplant and/or other relationships for Stropharia pseudocyanea (Peppery Roundhead)

One of the greenish-blue Stropharia’s, it is said to have a peppery smell, but can also be identified by the combination of capitate cheilocystidia and absence of marginal chrysocystidia. It is occasional but widespread in moist pastures and woodland clearings, especially in acid sites.

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