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Ulocolla pinicola

From Wikipedia, the free encyclopedia
Species of fungus

Ulocolla pinicola
Ulocolla pinicola on pine, Canada
Scientific classification Edit this classification
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Auriculariales
Family: Auriculariaceae
Genus: Ulocolla
Species:
U.pinicola
Binomial name
Ulocolla pinicola
(Peck) Spirin (2026)
Synonyms
  • Tremella pinicola Peck (1886)
  • Exidia pinicola (Peck) Coker (1920)

Ulocolla pinicola is a species of fungus in the family Auriculariaceae. Basidiocarps (fruit bodies) are gelatinous, reddish brown, button-shaped at first then often coalescing and becoming irregularly effused. It is a saprotroph, growing on dead branches of pine and other conifers in North America.

Taxonomy

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The species was first described in 1886 from New York as Tremella pinicola by mycologist Charles Horton Peck and placed in Exidia by William Chambers Coker in 1920.[1] Recent molecular research, based on cladistic analysis of DNA sequences, has shown that the species belongs in a clade distinct from Exidia and is referable to the genus Ulocolla .[2]

Description

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The basidiocarps of U. pinicola are yellowish to reddish brown, gelatinous, button-shaped at first but later coalescing to form effused, irregular, often brain-like or foliaceous masses up to 5 cm across and 2 cm thick. The surface is smooth.[2]

Microscopic characters

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The translucent hyphae are 1.0–6.5 μm in diameter, monomitic, branched, thin-walled, and form clamp connections. Hyphae frequently form anastomoses. Basidia are typically 13.5 to 19 μm long, elliptical, and consist of four longitudinally septate cells. Basidiospores are allantoid (sausage shaped), 9 to 13 by 3.5 to 5 μm, with thin, smooth walls.[2]

Similar species

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Specimens have generally been referred to Exidia saccharina (Ulocolla saccharina ) until recently, but the latter species is only known from Europe.[2] In North America, Exidia crenata produces fruit bodies of similar colour, but occurs on broadleaf trees.[3]

References

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  1. Coker WC (1920). "Notes on the lower basidiomycetes of North Carolina". Journal of the Elisha Mitchell Scientific Society. 35: 113–182.
  2. 1 2 3 4 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. doi:10.3897/imafungus.17.189042.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  3. Wu F, Zhao Q, Yang ZL, Ye SY, Rivoire B, Dai YC (2020). "Exidia yadongensis, a new edible species from East Asia". Mycosystema. 39: 1203–1214. doi:10.13346/j.mycosystema.200205.

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