Phylum: Basidiomycota Class: Basidiomycetes
Order: Boletales Family: Paxillaceae
Species: Paxillus involutus (Batsch) Fr.
Synonyms: Agaricus contiguus
Paxillus involutus var. subinvolutus
Common Name: Brown Rollrim
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This distribution map was produced using DMap
Paxillus involutusPhotographer: © David Mitchel
Photographer: © David Mitchel

Photographer: © David Mitchel
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View this species in its UK context on the BMS Database
Associated Species (where recorded) & number of records:
Betula (94)
Betula pendula (47)
Betula pubescens (20)
Fagus sylvatica (17)
Corylus avellana (8)
Larix (4)
Quercus (4)
Abies procera (3)
Larix decidua (3)
Picea abies (3)
Betula jacquemontii (2)
Pinus sylvestris (2)
Alnus glutinosa (1)
Beech (1)
Fraxinus excelsior (1)
Picea sitchensis (1)
Quercus petraea (1)
Habitat (where recorded) & number of records:
Woodland: broadleaved, semi-natural (37)
Woodland: mixed (12)
Woodland: broadleaved (10)
Woodland: coniferous, plantation (6)
Acid grassland (4)
Neutral grassland: semi-improved (4)
Parkland and scattered trees: mixed (4)
Woodland (4)
Woodland: broadleaved, plantation (4)
Woodland: mixed, plantation (4)
Built up area, domestic (3)
Built-up areas (3)
Mire: blanket bog (3)
Parkland and scattered trees (3)
Woodland: plantation (3)
Bog (2)
Boundaries: hedge with trees, species-rich (2)
Grassland: acidic, upland (2)
Neutral grassland: unimproved (2)
Woodland: mixed, semi-natural (2)
Acid grassland: semi-improved (1)
Acid grassland: unimproved (1)
Boundaries: hedge with trees (1)
Calcareous grassland: semi-improved (1)
Marginal/inundation: marginal (1)
Parkland and scattered trees: broadleaved (1)
Scrub (1)
Woodland: coniferous (1)
Substrate (where recorded) & number of records:
Soil (45)
Soil Grassy (35)
Soil Leaves (32)
Soil Mossy (24)
Soil bare (8)
Soil Needle (7)
Soil Peat (3)
Dead Wood (1)
Grass (1)
Months recorded in & number of records:
January (1)
July (8)
August (34)
September (85)
October (80)
November (17)