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Tricholoma colossusPhoto: FungocevaBack to the BAP list |
DescriptionGeneral: Large fleshy chestnut-brown scaly agaric; solitary or scattered, on soil in pine woods.Dimensions: Cap 7-15cm dia; stem 10-12cm tall x 1.5-3.0cm dia. Cap: Chestnut-brown to reddish-brown, greasy, tomentose-scaly with the scales more adpressed fibrous at the margin; at first strongly-convex then more flattened and radially cracked. Flesh whitish, unchanging, thick and firm. Gills: Pallid cap colour, adnate, notched, crowded. Stem: Pallid brownish at the apex, somewhat granular, reddish-brown fibrous- scaly below the ring; more or less equal; ring present. |
Spores: Hyaline, smooth, ellipsoid, non-amyloid, 4.5-5.5 x 3.0-3.5 µm. Basidia 4 spored; cystidia absent. Odour: Not Distinctive. Taste: Not Distinctive. Chemical Tests: None. Occurrence: Autumn. |
| Qualifying criterion: 4.7: very rare species with restricted UK range |
| Justification: declined by more than 50% pre- and post-1960 |
| Threats: air pollution, fertiliser and lime application, felling of host trees, soil compaction, disturbance |
| Action Required: Survey and monitoring; protection against habitat loss and degradation; ecological assessment, taxonomic research. |
Statistics:UK (excluding NI & CI) fungus records |
Total records: 19 |
| Earliest recording: 1875 | |
| Latest recording: 1975 | |
| Vice Counties and (frequency): 20(1); 88(1); 95(4); 96(12) | |
| Pre-1960: 18 records | |
| NBN Gateway grid map | Post-1960: 1 records |