Tulostoma melanocyclum

Photo: John Weir

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Description

General: Small brownish or reddish-brown, more or less rounded head surmounting a tough concolorous stem; in small trooping groups on sandy soil, mostly on dunes among moss or herbaceous plants.
Dimensions: Spore sac x 0.8-1.0cm dia; stem 2.5-4.0cm tall x 0.2-0.3cm dia.
Fruit Body: Peridium sub-spherical with small papillate projection perforated by an osteole; exoperidium tending to bind sand grains, then flaking away; papery endoperidium cream to pale straw or pinkish; borne on rooting brown to reddish-brown stem, fibrous, stiff, typically scaly. Gleba yellowish-brown.
Spores: Yellowish-brown, minutely warty, sub-spherical, non-amyloid, 7-9 x 3-4 µm. Basidia not seen.
Odour: Not Distinctive.
Taste: Not Distinctive.
Chemical Tests: None.
Occurrence: Late Autumn and occasionally in Spring.

 

Qualifying criterion: 4.7: very rare species with restricted UK range on sand dunes
Justification: declined by approximately 50% pre- and post-1960
Threats: disturbance due to recreational pressures and coastal management
Action Required: Survey and monitoring; protection against habitat loss and degradation; raising awareness

 

Statistics:

UK (excluding NI & CI) fungus records

 

Total records: 57

Earliest recording: 1914
Latest recording: 2004
Vice Counties and (frequency): 4(8); 27(1); 28(10); 41(11); 48(1); 59(20); 69(4)
Pre-1960: 28 records
NBN Gateway grid map Post-1960: 29 records