Phylum: Basidiomycota	Class: Tremellomycetes
Order: Tremellales	Family: Tremellaceae
Species: Tremella mesenterica Retz.

Synonyms:

Exidia candida Hormomyces aurantiacus Tremella albida Tremella candida Tremella lutescens Tremella mesenterica var. lutescens Ymenydd yr Eithin

Common Name:

Yellow Brain

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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: Ulex europaeus (37) Quercus (13) Fraxinus excelsior (10) Fagus sylvatica (9) Peniophora incarnata (6) Ulex (3) Acer pseudoplatanus (3) Peniophora (3) Sambucus nigra (3) Corylus avellana (2) Ulmus glabra (2) Salix cinerea (2) Salix caprea (2) Salix (2) Peniophora lycii (2) Crataegus monogyna (2) Alnus glutinosa (2) Quercus robur (1) Pinus (1) Peniophora cinerea (1) Cytisus scoparius (1) Betula pubescens (1)

Habitat (where recorded) & number of records: Woodland: broadleaved, semi-natural (15) Parkland and scattered trees (8) Woodland and scrub (8) Neutral grassland: semi-improved (7) Scrub (7) Scrub: scattered (6) Woodland: mixed, semi-natural (6) Woodland: mixed (5) Acid grassland: semi-improved (4) Calcareous grassland: unimproved (4) Woodland (4) Woodland: broadleaved (4) Woodland: mixed, plantation, high forest (4) Built up area, domestic (3) Woodland: broadleaved, plantation, high forest (3) Artifical rock exposure and waste: quarry (2) Grassland: neutral, upland (2) Lolium perenne-Cynosurus cristatus grassland (2) Parkland and scattered trees: mixed (2) Scrub: dense/continuous (2) Woodland: coniferous, plantation (2) Acid grassland: unimproved (1) Bog (1) Boundaries, permanently wet ditch (1) Boundaries: defunct hedge (1) Cultivated/disturbed land: introduced shrub (1) Grassland and marsh (1) Heathland (1) Marginal/inundation: inundation (1) Navigable canals (1) Valley alderwoods on mineral soils (1) Woodland: broadleaved, plantation (1) Woodland: broadleaved, semi-natural, under planted (1) Woodland: mixed, plantation (1)

Substrate (where recorded) & number of records: Wood (43) Branch (28) Dead Wood (17) Soil (5) Dead Branch (3) Dead Twig (3) Fallen Branch (3) Tree (3) Twig (3) Fallen Twig (2) Fallen Wood (1) Rotting Wood (1) Standing Dead Branch (1) Stump (1)

Months recorded in & number of records: January (27) February (7) March (8) April (10) May (7) July (13) August (8) September (19) October (52) November (22) December (13)