A medium to large size, all over white to cream coloured polypore, usually covered with algae. Growing individually or in clusters on large deciduous tree stumps or logs, most of all Beech.
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Lumpy Bracket
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Lumpy Bracket
| Mushroom Type | |
| Common Names | Lumpy Bracket , Ysgwydd Gefngrwn (CY), Wrośniak Garbaty (PL), Púpos Egyrétűtapló (HU) |
| Scientific Name | Trametes gibbosa |
| Synonyms | Polyporus gibbosus, Daedalea gibbosa, Merulius gibbosus, Trametes crenulata |
| Season Start | All |
| Season End | All |
| Average Mushroom height (CM) | |
| Average Cap width (CM) | 5–20 |
Please note that each and every mushroom you come across may vary in appearance to these photos.
Fruiting Body
Annual. 5–20 cm across, 1–3(5) cm thick. Shelflike, semi-circular to fan or kidney shaped (with a distinct attachment point), many fruitbodies can overlap each other and form numerous clusters. Attached to the host/substrate on one point. Upper (sterile) surface warty to uneven. Densely covered with soft hairs (tomentose) at first, but these fine soft hairs can disappear with time. Often zonate or sulcate, and this is more pronounced when covered with algae. Margin mostly white, off-white or buff; wide and undulating.
Pores
Tubes are 1–5 mm long and 0.3–1 mm wide, concolorous with the flesh. Pores 1–3 per mm, rectangular to radially elongated, but sometimes could be somewhat irregularly sinuous to almost labyrinthoid (especially near to the margin); white to cream.
Flesh
Up to 1.5 cm thick. Whitish to cream, azonate, corky, fibrous and tough.
Habitat
On dead, fallen or decayed wood of various hardwoods, especially Beech, Sycamore and Horse Chestnut. Saprotrophic, causes white-rot.
Possible Confusion
Hairy Bracket (Trametes hirsuta) can look relatively similar, but it is usually smaller, and has round-angular pores (3–4 pores/mm).
Trametes pubescens can also look similar, but it is also smaller, and has round-angular pores (3–5 pores/mm).
These two species grow on many different hardwood genera, and rarely on conifers too.
Taste / Smell
Inedible. Taste mild, smell indistinctive.
Frequency
Very common and widespread.
Spores
Spore print white. Spores cylindrical to oblong-ellipsoid, colourless (hyaline), thin-walled, smooth and inamyloid (not staining in iodine reagents, such as Melzer’s reagent and Lugol’s solution).
Other Facts
The genus name ‘Trametes‘ came from the Latin prefix ‘tram-‘ which means ‘thin’, and ‘-etes‘ which means ‘one which is’. Together refers to the thin nature of the fruitbodies.
The epithet (2nd part of the scientific names) also came from Latin, where ‘gibbus‘ means ‘humped’, ‘hunched’, ’rounded’ or ‘forming a swelling’. As an adjective, ‘gibbose‘ means something that is enlarging or swelling, see: gibbose Moon, which refers to the Lunar phase when the Moon is more than half full.
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