Exidia zelleri
| Exidia zelleri | |
|---|---|
Scientific classification  | |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Auriculariales |
| Family: | Auriculariaceae |
| Genus: | Exidia |
| Species: | E. zelleri |
| Binomial name | |
| Exidia zelleri Lloyd (1920) | |
Exidia zelleri is a species of fungus in the family Auriculariaceae. Basidiocarps (fruit bodies) are gelatinous, grey-brown to black, button-shaped at first then sometimes coalescing and becoming irregularly effused. It grows on dead branches of broadleaved trees and is known from north-western North America and northern Europe.
Taxonomy
The species was first described in 1920 from Oregon by mycologist Curtis Gates Lloyd.[1]
Description
The basidiocarps of E. zelleri are gelatinous, button-shaped to turbinate (top-shaped) and attached to the wood at a point, sometimes coalescing to form effused, irregular masses up to 8 cm across, grey brown to brownish black, darkening with age or when dry.[1][2] All surfaces are smooth.[3]
Microscopic characters
The translucent hyphae are thin-walled and form clamp connections. Basidia are septate, elliptical. 14.5 to 26 by 9 to 15 μm. Basidiospores are allantoid (sausage-shaped), 13 to 22 by 4 to 7 μm, with thin, smooth walls.[3]
Similar species
Fruit bodies of Exidia crenata and Exidia recisa also occur on broadleaved trees in North America, but are typically reddish to orange-brown. Exidia glandulosa is brownish black and very similar, but has papillae (small pegs or pimples) on the upper surface.[3]
Distribution and habitat
Exidia zelleri was originally described from Oregon and has also been recorded from California, British Columbia,[4] and Scandinavia.[3] It was originally collected on dead wood of Acer, but has subsequently been reported on other broadleaved trees, particulary willow (Salix).[3]
References
- 1 2 Lloyd, CG (1920). "Exidia zelleri". Mycological Writings of C.G. Lloyd. 6 (Letter No. 62): 931.
- ↑ Gibson I. "Electronic Atlas of the Flora of British Columbia: Exidia zelleri". University of British Columbia. Retrieved 1 August 2024.
- 1 2 3 4 5 Spirin V, Malysheva V, Schoutteten N, Savchenko A, Rivoire B, Olsson J, Læssøe T, Ryvarden L, Grootmyers D, Kulju M, Vlasák J, Vignale MV, Viner I (2026). "Exidia and Exidiopsis (Auriculariales, Basidiomycota): a reconsideration". IMA Fungus. 17 e189042. doi:10.3897/imafungus.17.189042.
- ↑ Ginns J, Lefebvre MN (1993). Lignicolous corticioid fungi of North America. Mycologia Memoir 19. APS Press. p. 247. ISBN 0890541558.