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| Record Summary | on warm, rotting, piles of chipped birch wood |
| Found as | Fruitbody |
| Date | 18 October 2007 |
| OS grid ref | OSGR: SU56 |
| Lat/Lon | 51° 30’ N, 1° 10’ W |
| Vice County | Berks, VC no: 22 |
| Country | England |
| Voucher | 18 Oct 2007[A] (Please quote this in any queries about this record) |
Notes:
On rotting piles of chipped wood (mainly birch but with some pine). The wood was warm to touch, very wet (but we’ve had recent rain) and permeated with white mycelium.
Fruitbodies: large toadstools clustered, up to 80mm tall including buried root, small toadstools in troops. No smell.
Cap: up to 65mm diam, weakly umbonate at first, centre often with short erect scales, radially fibrillose to scaly, scales dark brick to pale to dark purple on paler ground, fading to pale vinaceous grey then saffron. Finally without purple or lilaceous tones. Bruised patches are inky blue-black. Margin incurved, with superficial fibrillose veil fragments.
Ring: high on stem, descending, membranous, saffron, radially fibrillose on underside when young.
Stipe: tapering downwards, upwards or fistulose, rooting, root often quite long and attached to a piece of wood. Above the ring it is vinaceous, weakly ribbed and superficially tomentose. Below the ring it is strongly longitudinally fibrous to rimose with dark reddish-brown streaks, appearing handled even when fresh. Base rusty tomentose, darker when wet.
Gills: broad (up to 10mm deep at broadest), thin (and slightly wavy in large caps), crowded, yellowish buff, bruising apricot, arcuate-adnate, with up to 5 irregular ranks of intermediates. Margin smooth, concolourous. Bruising brown.
Flesh: thick in centre of cap, pale cream, salmon in upper centre, becoming greyish under chestnut cuticle. Stipe hollow, fibrous, flesh pale cream above, dingy saffron in base, cortex darker chestnut to purplish chestnut.
Spore print: fulvous.
Spores: pale brown, broadly ellipsoid, warty on face and outline, 6.5-7(8)/4.5-5µm.
Basidia: 4-spored.
Cystidia: gill edge infertile, gill tissue leaking yellow pigment in ammonia preps. Chrysocystidia abundant, especially in gill edge, variable in shape, mainly fusiform but varying to cylindric, clavate, capitate or lageniform, pale yellow to rich brown in ammonia, the darker ones standing out in the prep. Cheilocystidia: hyaline, thin-walled, lageniform, often slighly capitate, small. Pleurocystidia: absent.
Cap cuticle: filamentous, septate, clamped, with pale pinkish brown pigment (contents?). No pigment leaks out in ammonia preps.
Ammonia: slightly darkens cap, soon fades; stem base turns purplish chestnut; gills rusty brown after some time.
The following literature was used to identify this find:
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