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 (37) Betula pubescens (15) Betula pendula (11) Corylus avellana (7) Alnus glutinosa (7) Acer pseudoplatanus (2) Fagus sylvatica (2) Fraxinus excelsior (2) Alisma plantago-aquatica (1) Cotoneaster (1) Alnus (1)

Habitat (where recorded) & number of records: Woodland: broadleaved, semi-natural (19) Woodland and scrub (16) Woodland: mixed, plantation (7) Woodland (6) Parkland and scattered trees: mixed (4) Woodland: broadleaved, plantation (4) Woodland: mixed, semi-natural (4) Neutral grassland: semi-improved (3) Parkland and scattered trees (3) Woodland: mixed (3) Woodland: broadleaved (2) Bog (1) Bog: raised (1) Boundaries: hedge with trees, species-rich (1) Built up area, domestic (1) Scrub (1) Scrub: dense/continuous (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, high forest (1)

Substrate (where recorded) & number of records: Branch (35) Dead Wood (16) Wood (12) Tree (9) Fallen Branch (5) Log (3) Dead Branch (2) Fallen Tree (2) Fallen log (1) Stump (1)

Months recorded in & number of records: January (4) February (3) March (9) April (9) May (15) June (7) July (7) August (10) September (15) October (27) November (5) December (3)