Armillaria ectypa

Armillaria ectypa is a species of mushroom in the family Physalacriaceae. Commonly known as the marsh honey fungus, it prefers growing in sphagnum bogs with mosses. It is classified as endangered in Great Britain, and is protected under the Wildlife and Countryside Act 1981; it is also on the provisional European red data list.[3]

Armillaria ectypa
Scientific classification
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Physalacriaceae
Genus: Armillaria
Species:
A. ectypa
Binomial name
Armillaria ectypa
(Fr.) Lamoure (1965)
Synonyms[2]
  • Agaricus ectypus Fr. (1821)
  • Clitocybe ectypa (Fr.) Gillet (1874)
  • Camarophyllus ectypus (Fr.) P.Karst. (1879)
  • Omphalia ectypa (Fr.) Quél. (1886)
  • Armillariella ectypa (Fr.) Singer (1943)

Description

The cap can grow to 10 cm (4 in) in diameter, and is convex at first becoming flattened with age, sometimes developing a depressed centre. The cap has a slightly curved margin and is often striate with the gills visible through its thin structure. The centre is dark brown and scaly. The rest of the cap is yellowish-brown to brown, paler when it is dry and darker when it is moist. The gills are rather narrow and decurrent, whitish at first, becoming cream, buff or pinkish. The stem is up to 10 cm (4 in) tall, cylindrical and slightly swollen at the base. It is the same colour as the cap. There are no mycelial cords at the base of the stem. The spore print is white.[4][5]

Distribution and habitat

The marsh honey fungus has a boreal and montane Eurasian distribution. In Europe, it has been recorded in Austria, Switzerland, the Czech Republic, Denmark, Sweden, Finland, France, Germany, Poland, the British Isles, the Netherlands, Russia and Slovakia. In Asia, it has been recorded in China, Japan and Turkey. Its typical habitat is in waterlogged habitats, in raised bogs, peat mires and alkaline fens, among Sphagnum mosses, sedges, cottongrass and reeds.[5] It is uncommon or rare across the whole of its range. It grows on the Garron Plateau in County Antrim in Northern Ireland, this being one of the only four known sites in the British Isles.[4]

See also

References
  1. Svetasheva T. (2015). "Armillaria ectypa". The IUCN Red List of Threatened Species (2015). doi:10.2305/IUCN.UK.2015-4.RLTS.T75097245A75098379.en.
  2. "GSD Species Synonymy: Armillaria ectypa (Fr.) Lamoure". CAB International. Species Fungorum. Retrieved 2015-12-14.
  3. "Action plan for Armillaria ectypa". UK Biodiversity Plan. 1999. Retrieved 2009-04-17.
  4. Allen & Mellon Environmental Ltd. "Armillaria ectypa – marsh honey fungus". Northern Ireland Priority Species. Retrieved 2020-03-07.
  5. Stasinska, Malgorzata (2015). "Armillaria ectypa, a rare fungus of mire in Poland". Acta Mycologica. 50. doi:10.5586/am.1064.
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