Earthtongue - Geoglossum

Description

Earthtongues are tongue or club-shaped, black or dark brown, with a hard rubbery texture, and may be up to 7cm long.  The top of the stalk is usually expanded into a spore-bearing head that is often grooved and flattened and can appear smooth to the naked eye.  The stalk is usually scaly.  Under a hand lens, the fertile head may appear velverty due to projecting asci.  Examination of spores from fully mature specimens is usually needed to identify the species.

Together with Waxcaps (Hygrophoraceae), clubs, spindles and corals (Clavaria, Clavulinopsis, etc., pinkgills (Entoloma) and Dermoloma species, Earthtongues are important indicators of unimproved grassland of conservation value.

Similar Species

Hairy Earthtongues (Trichoglossum) have a minutely bristly (not scaly) stalk, and fine hairs on the fertile head which are visible with a hand lens.  Dead Man's fingers or Dead Moll's Fingers  (Xylaria) are similar but found on stumps or decaying wood.

Identification difficulty
Recording advice

Photograph it in its habitat, and  provide a close-up photograph of the head and stalk of the club or tongue.  If you have not examined your specimen under the microscope or had it confirmed form a specimen by an expert, record it here.  Because earthtongues indicate conservation-value grasslands, all records even to genus are important.

Habitat

Unimproved grasslands especially on lawns, cemeteries, churchyards

When to see it

October - November

VC55 Status

uncommon

Further Information

A 'Beginner's Guide to Earthtongues' (Irene Ridge) was published in the North-west Fungi Group's newsletter of June 2006 - available here

Pat O'Reilly's 'First Nature' website has some helpful infiormation - e.g Geoglossum fallax

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Species profile

Common names
Earthtongue
Species group:
fungus
Kingdom:
Fungi
Order:
Geoglossales
Family:
Geoglossaceae
Records on NatureSpot:
6
First record:
07/11/2020 (Bell, Melinda)
Last record:
07/11/2024 (Timms, Sue)

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