Gomphus clavatus

Photo: Michael Krikorev

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Description

General: Also known as 'Pig's Ears'; distinctive medium sized lilaceous or violet to pinkish-yellow; top-shaped and funnelled, sometimes ear-shaped on one side; on soil in coniferous forests, more rarely with hardwoods; sometimes clustered or in rings.
Dimensions: 4-10cm tall x 2-6cm dia.
Fruit Body: lilaceous or violet with ochre or grey-brown tinges; turbinate, infundibuliform when young, smooth to undulating, margin acute; hymenial surface longitudinally veined with sometimes forked and anastomosing ridges; stem base smooth, finely tomentose; flesh: white, marbled, soft and fragile.
Spores: Yellowish, ellipsoid, coarsely verrucose, with droplets, 10-14 x 4.5-5.5 µm . Basidia 4 spored; cystidia absent.
Odour: Not distinctive.
Taste: Not distinctive.
Chemical Tests: None.
Occurrence: Summer.

 

Qualifying criterion: 1: internationally threatened species
Justification: threatened in over 50% of countries within its European range
Threats: acidification and eutrophication of forest soils, ground compaction, felling of host trees, overgrowth
Action Required: with only 1 post-1960 record, detection and recording is a priority.

 

Statistics:

UK (excluding NI & CI) fungus records

 

Total records: 9

Earliest recording: 1891
Latest recording: 2001
Vice Counties and (frequency): 18(3) 22(1); 23(2); 33(2); 92(1)
Pre-1960: 8 records
NBN Gateway grid map Post-1960: 1 records