Biology
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Fungi are an enormous group of organisms that are so distinctive from both plants and animals that they are placed in their own kingdom. The main body of the fungus is composed of a multitude of microscopic threads (known as 'hyphae') which are located within the substrate (4). The fruiting body (such as the more familiar mushroom or toadstool) is produced to release spores and thus allows reproduction to occur. Fungi feed by absorbing nutrients from their surroundings.
Boletopsis grisea produces its squat fruiting bodies annually, between August and November (2).
Conservation
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More sustainable forest management and a reduction in air pollution would help to secure the future of this fungus (2). In addition, Boletopsis grisea is a candidate species for listing in Appendix I of the Convention on the Conservation of European Wildlife and Natural Habitats, otherwise known as the Bern Convention (3)(5).
Description
provided by Arkive
This squat fungus produces broad, pale grey caps, the surfaces of which are often cracked into scales (2). The solid stipe (or stem) is short and located in the centre of the cap; it is greyish in colour (2).
WARNING: many species of fungus are poisonous or contain chemicals that can cause sickness. Never pick and eat any species of fungus that you cannot positively recognise or are unsure about. Some species are deadly poisonous and can cause death within a few hours if swallowed.
Habitat
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Boletopsis grisea has a mycorrhizal relationship with Scots pine (Pinus sylvestris) and is therefore always found associated with this tree (3). These fungi are found in forests that are generally dominated by pine, with lichens and poor acidic soils (3).
Range
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Boletopsis grisea is found in the boreal forests of Europe, reaching into Asia and North America (2).
Status
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Short-listed for inclusion in the Bern Convention by the European Council for Conservation of Fungi (ECCF), and included on the Red Lists of 5 countries (3).
Threats
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This fungus is threatened by the destruction of the pine forests of its habitat (2). Air pollution and the overuse of fertilisers pose additional threats to survival (2).
Comprehensive Description
provided by North American Flora
Scutiger griseus (Peck) Murrill, Bull. Torrey Club 30 : 431. 1903
Polyporus griseus Peck, Ann. Rep. N. Y. State Mus. 26 : 68. 1874.
Polyporus Barlei Underw. Bull. Torrey Club. 24 : 84. 1897. (Type from Alabama.)
Pileus circular, often irregular, convex, 7-12 cm. broad, 1 cm. or less thick ; surface glabrous or minutely tomentose, cinereous, slightly darker towards the center ; margin thin, concolorous, often incurved on drying, irregular, undulate to lobed : context softfleshy, rosy-gray, about 5 mm. thick ; tubes slightly decurrent, 1-2 mm. long, whitishstuffed when young, white to pale-umbrinous within, mouths subangular, unequal, 2-4 to a mm., edges thin, entire to fimbriate, lacerate with age, white when young, becoming gray or umbrinous : spores subglobose, hyaline, echinulate, 5-6 X 4.5-5 ,«: stipe central, thick, short, bulbous at the base, with surface and substance resembling that of the pileus, but darker in color, 4-5 cm. long, 1-1.5 cm. thick.
Type locality : New York.
Habitat: On the ground in open deciduous or coniferous woods.
Distribution : New York, New Jersey, and Alabama.
- bibliographic citation
- William Alphonso MurrilI, Gertrude Simmons BurIingham, Leigh H Pennington, John Hendly Barnhart. 1907-1916. (AGARICALES); POLYPORACEAE-AGARICACEAE. North American flora. vol 9. New York Botanical Garden, New York, NY
Boletopsis grisea: Brief Summary
provided by wikipedia EN
Boletopsis grisea is a species of fungus in the family Bankeraceae. The fruit bodies are gray, fleshy polypores that grow on the ground in a mycorrhizal association with Scots pine (Pinus sylvestris). It is found in Asia, North America, and Europe.
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