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 Jackrogersella multiformis Sphaeria crustacea Sphaeria granulosa Sphaeria multiformis Stromatosphaeria elliptica Stromatosphaeria rubiginosa

Common Name:

Birch Woodwart

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This distribution map was produced using DMap

On Birch, Betula

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 (13) Betula pendula (7) Corylus avellana (5) Alnus glutinosa (5) Cotoneaster (1) Alisma plantago-aquatica (1) Acer pseudoplatanus (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: mixed, semi-natural (3) Parkland and scattered trees: mixed (2) Woodland: broadleaved (2) Woodland: broadleaved, plantation (2) Woodland: mixed (2) Bog (1) Boundaries: hedge with trees, species-rich (1) Built up area, domestic (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) Branch (9) Wood (9) Tree (8) Fallen Branch (4) Dead Branch (2) Fallen Tree (2) Stump (1)

Months recorded in & number of records: January (4) February (2) March (7) April (9) May (11) June (3) July (4) August (2) September (7) October (21) November (4) December (1)