Sirobasidium magnum


Sirobasidium magnum is a species of fungus in the order Tremellales. Basidiocarps (fruit bodies) are gelatinous, lobed to foliose (leaf-like) and appear to be parasitic on ascomycetous fungi on wood. No other Sirobasidium species has such large fruit bodies.[1] The species was originally described from Indonesia, but has been reported from elsewhere in Asia and also in Australia and North America.

Sirobasidium magnum
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Tremellomycetes
Order: Tremellales
Family: Sirobasidiaceae
Genus: Sirobasidium
Species:
S. magnum
Binomial name
Sirobasidium magnum
Boedijn (1934)

Taxonomy

Sirobasidium magnum was described from Borneo and Java in 1934 by Dutch mycologist Karel Boedijn.[2]

Description

Fruit bodies are gelatinous, lobed and folded, and orange-brown. measuring up to 45 mm across. Basidia are catenulate (formed in chains), with up to 8 basidia in each chain. Individual basidia are oval to fusiform and transversely 2-4-septate. The sterigmata are deciduous, fusiform, 15-19 x 4-5 μm.[2] The basidiospores are globose, 7-9 μm across.[1]

Habitat and distribution

Sirobasidium magnum was originally described on rotten wood, but is possibly parasitic on fungi in the genus Hypoxylon growing on dead attached or fallen wood.[1] Sirobasidium magnum has been recorded from Asia (China,[3] Indonesia,[2] Japan,[4] Korea,[5] Malaysia,[6] Philippines,[4] Singapore,[7] Taiwan,[1] Thailand[8]), Australia,[7] the Seychelles,[7] Tahiti,[9] and North America (USA).[7]


References
  1. Chen C-J. (1998). Morphological and molecular studies in the genus Tremella. Berlin: J. Cramer. p. 225. ISBN 978-3-443-59076-5.
  2. Boedijn KB (1934). "The genus Sirobasidium in the Netherlands Indies". Bull. Jardin Bot. Buitenzorg, ser III. 12: 266–268.
  3. "University of British Columbia Fungal Herbarium". Retrieved 2023-05-09.
  4. Moore RT (1979). "Septal ultrastructure in Sirobasidium magnum and its taxonomic implications". Antonie van Leeuwenhoek. 45: 113–118. doi:10.1007/BF00400784.
  5. Lee WD, Lee H, Fong JJ, Oh S, Park SS, Quan Y, Jung PE, Lim YW (2014). "A checklist of the basidiomycetous macrofungi and a record of five new species from Mt. Oseo in Korea". Mycobiology. 42: 132–139. doi:10.5941/MYCO.2014.42.2.132.
  6. "University of British Columbia Fungal Herbarium". Retrieved 2023-05-09.
  7. "Kew Mycology Collection". Retrieved 2023-05-09.
  8. "University of British Columbia Fungal Herbarium". Retrieved 2023-05-09.
  9. "University of Tennessee Fungal Herbarium". Retrieved 2023-05-09.
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