Phylum: Ascomycota	Class: Sordariomycetes
Order: Xylariales	Family: Xylariaceae
Species: Annulohypoxylon multiforme (Fr.) Y.M. Ju, J.D. Rogers & H.M. Hsieh

Synonyms:

Annulohypoxylon multiforme var. multiforme Hypoxylon crustaceum Hypoxylon granulosum Hypoxylon multiforme Sphaeria crustacea Sphaeria granulosa Sphaeria multiformis Stromatosphaeria elliptica

Common Name:

Birch Woodwart

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This distribution map was produced using DMap

Photographer: © David Mitchel

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View this species in its UK context on the NBN Atlas

Associated Species (where recorded) & number of records: Betula pubescens (14) Betula (11) Betula pendula (7) Corylus avellana (5) Alnus glutinosa (5) Acer pseudoplatanus (1) Alisma plantago-aquatica (1) Fagus sylvatica (1)

Habitat (where recorded) & number of records: Woodland: broadleaved, semi-natural (14) Neutral grassland: semi-improved (3) Parkland and scattered trees (3) Woodland (3) Woodland: broadleaved (2) Woodland: broadleaved, plantation (2) Woodland: mixed (2) Woodland: mixed, semi-natural (2) Bog (1) Boundaries: hedge with trees, species-rich (1) Built up area, domestic (1) Parkland and scattered trees: mixed (1) Scrub (1) Scrub: dense/continuous, acidic (1) Scrub: scattered (1) Woodland: broadleaved, plantation, high forest (1) Woodland: broadleaved, plantation, under planted (1) Woodland: broadleaved, semi-natural, coppice (1) Woodland: broadleaved, semi-natural, high forest (1) Woodland: mixed, plantation (1) Woodland: mixed, plantation, high forest (1)

Substrate (where recorded) & number of records: Dead Wood (13) Castanea sativa (9) Tree (8) Acer pseudoplatanus (6) Dead Branch (2) Fallen Branch (2) Fallen Tree (2) Norway Maple (1) Quercus rubra (1) Stump (1) wood (1)

Months recorded in & number of records: January (4) February (2) March (7) April (9) May (11) June (3) July (4) September (7) October (19) November (4) December (1)