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Tricholoma colossusPhoto: FungocevaBack to the BAP list |
DescriptionGeneral: Massive fleshy reddish-brown agaric; solitary or scattered, on soil in coniferous woods favouring pine.Dimensions: Cap 10-25cm dia; stem 6-10cm tall x 3-8cm dia. Cap: Reddish-brown to chestnut to foxy-brown; at first strongly convex with involute margin then somewhat more flattened. Flesh whitish but reddening on exposure to air, thick and firm. Gills: Pallid cap colour, adnate, somewhat concave, crowded. Stem: Brick-red but with the apex distinctively white; more or less equal without volval remnants; ring absent. |
Spores: Hyaline, smooth, broadly ellipsoid, non-amyloid, with droplets, 8.0-10.0 x 5-6 µm. Basidia 4 spored, cystidia absent. Odour: Not Distinctive. Taste: Not Distinctive. Chemical Tests: None. Occurrence: Autumn. Action Required: Survey and monitoring; protection against habitat loss and degradation. |
| Qualifying criterion: 4.7: very rare species with restricted UK range in Caledonian pine woods |
| Justification: declined since 1980 and now known from only 2 sites; threatened in 3 out of 9 countries in its European range |
| 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. |
Statistics:UK (excluding NI & CI) fungus records |
Total records: 16 |
| Earliest recording: 1957 | |
| Latest recording: 2004 | |
| Vice Counties and (frequency): 92(8); 96(8) | |
| Pre-1960: 3 records | |
| NBN Gateway grid map | Post-1960: 13 records |