Phylum: Ascomycota	Class: Leotiomycetes
Order: Helotiales	Family: Helotiaceae
Species: Hymenoscyphus fructigenus (Bull.) Gray

Synonyms:

Helotium fructigenum Helotium fructigenum var. coryli Helotium virgultorum var. fructigenum Hoelen Cnau Hymenoscyphus fructigenus var. coryli Peziza fructigena

Common Name:

Nut Disco

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This distribution map was produced using DMap

On Beech mast

Photographer: © Debbie Nelson

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View this species in its UK context on the NBN Atlas

Associated Species (where recorded) & number of records: Corylus avellana (16) Fagus sylvatica (10) Quercus (4) Alnus (1) Crataegus monogyna (1) Quercus robur (1)

Habitat (where recorded) & number of records: Woodland and scrub (9) Woodland (5) Woodland: broadleaved, semi-natural (4) Scrub (2) Woodland: broadleaved (2) Built up area, domestic (1) Grassland: calcareous, semi-improved, upland (1) Neutral grassland: semi-improved (1) Parkland and scattered trees (1) Parkland and scattered trees: mixed (1) Woodland: broadleaved, plantation (1) Woodland: broadleaved, semi-natural, coppice with standards (1) Woodland: broadleaved, semi-natural, high forest (1) Woodland: mixed (1) Woodland: mixed, plantation (1) Woodland: mixed, semi-natural (1)

Substrate (where recorded) & number of records: Cupule (17) Nut (8) Fruitbody (3) Catkin Female (1) Fallen Twig (1) Fruit (1) Fruit, dead (1) Wood (1)

Months recorded in & number of records: June (2) July (1) August (5) September (11) October (21)