Phylum: Ascomycota Class: Leotiomycetes
Order: Helotiales Family: Rutstroemiaceae
Species: Rutstroemia firma (Pers.) P. Karst.
Synonyms: Ciboria ochroleuca
Hymenoscyphus firma
Lanzia firma
Peziza firma
Phialea firma
Poculum firmum
Common Name: Brown Cup

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Rutstroemia firmaPhotographer:  David Mitchel
Photographer: David Mitchel

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Associated Species (where recorded) & number of records:
Quercus petraea (9)
Quercus robur (5)
Quercus (4)
Alnus glutinosa (3)
Corylus avellana (1)
Betula (1)
Fagus sylvatica (1)
Habitat (where recorded) & number of records:
Woodland: broadleaved, semi-natural (9)
Woodland (5)
Built up area, domestic (3)
Neutral grassland: semi-improved (3)
Parkland and scattered trees (3)
Woodland: mixed (3)
Woodland: broadleaved (2)
Woodland: coniferous, plantation (2)
Woodland: mixed, semi-natural (2)
Acid sessile oak-hazel-ash woods (1)
Grassland: acidic, unimproved, lowland (1)
Scrub (1)
Woodland: broadleaved, semi-natural, high forest (1)
Woodland: broadleaved, semi-natural, under planted (1)
Woodland: mixed, plantation (1)
Woodland: mixed, plantation, high forest (1)
Substrate (where recorded) & number of records:
Castanea sativa (6)
Fallen Twig (6)
Quercus rubra (5)
Twig (3)
Dead Branch (2)
Dead Wood (2)
Fallen Branch (2)
Dead Twig (1)
Months recorded in & number of records:
March (4)
June (1)
September (3)
October (23)
November (5)