Cystoderma amianthinum (Scop.) Fayod
(Earthy Powdercap)

Taxonomic hierarchy:
SpeciesCystoderma amianthinum (Earthy Powdercap)
GenusCystoderma (powdercaps)
FamilyAGARICACEAE (mushrooms, dapperlings and parasols, agaric)
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 Cystoderma amianthinum (Earthy Powdercap) :
1: Cystoderma amianthinum (Earthy Powdercap)
6 Oct 1999 OSGR: SU46 51° 20’ N, 1° 20’ W Vice County: Berks (VC 22) England
near Birch
Image 1: CollectionImage 2: CapImage 3: Cap surface - close-upImage 4: Fruitbodies - undersidesImage 5: Cap sphaerocysts - magnifiedImage 6: Cap sphaerocysts - magnified (2)Image 7: Cap sphaerocysts - microscope low magnificationImage 8: Cap sphaerocysts - microscope low magnification (2)Image 9: Spores - magnifiedImage 10: Spores - highly magnifiedImage 11: Spores - highly magnified (2)
2: Cystoderma amianthinum (Earthy Powdercap)
30 Sep 1998 OSGR: SU56 51° 20’ N, 1° 20’ W Vice County: Berks (VC 22) England
in grass beside Birch
Image 1: CapImage 2: Cap and stemImage 3: Cap and stem (2)Image 4: Cap and stem - just opening showing veilImage 5: Cap - LSImage 6: Cap surface - close-upImage 7: FruitbodiesImage 8: Fruitbodies - youngImage 9: Fruitbody - LSImage 10: GillsImage 11: Gills - close-upImage 12: Cap cuticle with sphaerocysts - magnifiedImage 13: Sphaerocyst - magnifiedImage 14: Sphaerocysts - magnifiedImage 15: Sphaerocysts - magnified (2)Image 16: Sphaerocysts on cap cuticle - magnifiedImage 17: Spores and sphaerocysts - microscope low magnificationImage 18: Spores - highly magnifiedImage 19: Spores - highly magnified (2)Image 20: Spores - highly magnified (3)Image 21: Spores - highly magnified (4)
3: Cystoderma amianthinum (Earthy Powdercap)
14 Oct 1997 OSGR: SU56 51° 20’ N, 1° 10’ W Vice County: Berks (VC 22) England
Image 1: Close up of cap surfaceImage 2: Side view showing ringImage 3: Top viewImage 4: Top view of capImage 5: Top view of cap (2)Image 6: Top view of older capImage 7: Underside as cap opensImage 8: Underside as cap opens - close up of breaking partial veilImage 9: Underside of capImage 10: Underside of cap showing gills
4: Cystoderma amianthinum (Earthy Powdercap)
13 Oct 1997 OSGR: SU57 51° 30’ N, 1° 20’ W Vice County: Berks (VC 22) England
Image 1: Cap marginImage 2: Close up of cap surfaceImage 3: GroupImage 4: KOH test on capImage 5: LS FruitbodyImage 6: RingImage 7: Side viewImage 8: Side view (2)Image 9: Stipe showing granular ringImage 10: Underside of cap showing gillsImage 11: Young fruitbody
5: Cystoderma amianthinum (Earthy Powdercap)
23 Oct 1985 OSGR: SU26 51° 20’ N, 1° 40’ W Vice County: North Wilts (VC 7) England
Single toadstool in thick grassy turf
Image 1: Fruitbody - side view showing gills - lain downImage 2: Fruitbody - top view - in situImage 3: Gills and stipe apex - close-upImage 4: Gills, ring zone and stipe apex - close-upImage 5: Spores - highly magnifiedImage 6: DescriptionImage 7: Description - contd
6: Cystoderma amianthinum (Earthy Powdercap)
23 Oct 1984 OSGR: SU26 51° 20’ N, 1° 40’ W Vice County: North Wilts (VC 7) England
Single toadstool amongst moss under birch, oak etc
Image 1: Fruitbody - side view - lain down - enlargedImage 2: Fruitbody - top view - in situ - enlargedImage 3: Gills and stipe apex - close-up - enlargedImage 4: Cap sphaerocysts - magnifiedImage 5: Spores - highly magnifiedImage 6: DescriptionImage 7: Description - contd
7: Cystoderma amianthinum (Earthy Powdercap)
29 Sep 1974 OSGR: SK38 53° 20’ N, 1° 30’ W Vice County: South-west Yorks (VC 63) England
Image 1: Collection

Identification Works

AuthorYearTitleSource
Savage, D. 2005 Fungi of the Far North: Part 1 Field Mycology Vol 6 (4): 132-136, rear cover.

Cystoderma amianthinum (Earthy Powdercap) may also be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Cystoderma amianthinum (Earthy Powdercap)
BioInfoBioInfo (www.bioinfo.org.uk) has 4 host/parasite/foodplant and/or other relationships for Cystoderma amianthinum (Earthy Powdercap)

A small yellowish-cream to orange-brown toadstool with a granular-scaly ring and a powdery cap which is often veined and wrinkled. The toadstool grows in moss (especially Polytrichum) or grass or on soil, in poor quality lawns, rough grassland, heaths and coniferous woods. It is common and widespread.

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