Gloiodon strigosus
| Gloiodon strigosus | |
|---|---|
_P._Karst_600817.jpg) | |
Scientific classification  | |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Russulales |
| Family: | Bondarzewiaceae |
| Genus: | Gloiodon |
| Species: | G. strigosus |
| Binomial name | |
| Gloiodon strigosus (Sw.) P.Karst. | |
| Synonyms[1] | |
Gloiodon strigosus is a species of fungus belonging to the family Bondarzewiaceae. It was originally described by Olof Swartz in 1810, and received its current name by Petter Adolf Karsten in 1879.[1]
Like all species of the genus Gloiodon, it is a wood-inhabiting fungus producing annual fruiting bodies with a hydnoid hymenium on dead wood.[2]
It has been reported from the boreal-hemiboreal zones in Europe, North America and Asia.[3] In Europe it is mainly found in Fennoscandia but are considered rare.[4]
Description
Fruiting body is pileate to resupinate, ochreaceous to greyish brown but darkening with age. Forms caps up to 3 cm and resupinate patches up to 6 cm. Pileus broadly attached and covered with stiff, shaggy, dark brown hairs, separated from the context with a thin dark zone. Hymenium with conical spines, up to 1 cm long, with a pale greyish brown colour that turns to a dark ash grey (usually covered in white spore mass) with age or under dry conditions.[4]
The hyphal system has both been described as dimitic[4] and as monomitic with dark sclerified generative hyphae that simulates skeletal hyphae.[2] Spores are hyaline, amyloid and measure 4.5-6 x 3.5-5 µm.[5] Basidia have basal clamps and four sterigmata. Gloeocystidia are present.[4]
Gloiodon strigosus usually forms multiple caps in close approximity, often growing by the edges of resupinate patches.[4]
Similar species
The hymenium with long spines coupled with a hairy pileus bears resemblance to Auriscalpium vulgare. However, the fruiting bodies of A. vulgare has a long stipe and grows out of Pinus cones on or in the ground.[5]
Other species in the genus Gloiodon have a similar appearance but differ in either substrate or distribution. G. occidentalis grows on conifer wood and G. nigrescens is a tropical species.[2]
Ecology
It is a saprotrophic fungus living on dead trunks of deciduous trees causing white rot.[6] Fruiting bodies are usually growing on fairly hard wood of moss covered trunks.[4] In Europe it is mostly associated with Populus but is also found on other deciduous trees such as Alnus and Salix.[5] Favors older forest habitats with high humidity and a stable stand of deciduous trees.[6][5]
Conservation and threats
Gloiodon strigosus is classified as Least Concern (LC) in the Finnish national red list,[7] while being classified as Near Threatened (NT) in Norway[8] and Vulnurable (VU) in Sweden.[9] The species is also classified as Imperiled (N2) in Canada.[10]
In Sweden it is regarded as a good indicator of older forest habitats with a long continuity of deciduous trees and high stable humidity.[6] It is sensitive towards all forestry practices that negatively affects the humidity levels and occurrence of deciduous wood.[6][9]
References
- 1 2 "Species Fungorum - Synonymy". Royal Botanic Gardens, Kew. 2025. Retrieved 19 March 2026.
- 1 2 3 Desjardin, D.E.; Ryvarden, L. (2003). "The genus Gloiodon". Sydowia. 55 (2): 153–161.
- ↑ "GBIF species: Gloiodon strigosus". Global Biodiversity Information Facility. Retrieved 19 March 2026.
- 1 2 3 4 5 6 Koski-Kotiranta, S.; Niemelä, T. (1987). "Hydnaceous fungi of the Hericiaceae, Auriscalpiaceae and Climacodontaceae in northwestern Europe". Karstenia. 27 (2): 43–70. doi:10.29203/ka.1987.253.
- 1 2 3 4 Læssøe, T.; Petersen, J.H. (2019). Fungi of Temperate Europe. Princeton University Press. p. 1060.
- 1 2 3 4 Nitare, J. (2023). Skyddsvärd skog. Naturvårdsarter och andra kriterier för naturvärdesbedömningar. Skogsstyrelsen. p. 346.
- ↑ "Red List results MX.205950". Retrieved 19 March 2026.
- ↑ "Norwegian Red List for Species 2021 (ID 21379)". Artsdatabanken. 2021. Retrieved 19 March 2026.
- 1 2 "Artfakta: borsttagging (Gloiodon strigosus)". SLU Artdatabanken. 2026. Retrieved 12 March 2026.
- ↑ "Wild Species Canada: GS043877". Retrieved 19 March 2026.