Porphyrellus porphyrosporus
| Porphyrellus porphyrosporus | |
|---|---|
| |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Boletales |
| Family: | Boletaceae |
| Genus: | Porphyrellus |
| Species: | P. porphyrosporus
|
| Binomial name | |
| Porphyrellus porphyrosporus | |
| Synonyms[1] | |
Porphyrellus porphyrosporus | |
|---|---|
 | Pores on hymenium |
 | Cap is convex |
 | Hymenium is adnate |
 | Stipe is bare |
 | Spore print is purple to brown |
 | Ecology is mycorrhizal |
 | Edibility is inedible |
Porphyrellus porphyrosporus, commonly known as the dusky bolete, is a rare fungus belonging to the family Boletaceae. With its purple-brown cap and stem, P. porphyrosporus is not easy to spot, despite its large size. It is a large (both cap diameter and stem length up to 15 cm) brown bolete. Found in Europe and North America in summer and autumn, the species occurs under trees.
Description
[edit]This mushroom has a dark brown cap, usually with a paler margin.[2] Initially convex, caps expand and sometimes become irregularly lobed. It is 6 to 15 cm (2+1⁄4 to 6 in) in diameter[3] when fully expanded, and the caps have soft buff flesh with a vinaceous tinge. The tubes are similar in colour to the cap, and when cut or bruised, turn blue-green.[2] The stem is 5 to 16 cm (2 to 6+1⁄4 in) tall and 1 to 3 cm (3⁄8 to 1+1⁄8 in) in diameter, equal or clavate,[3] tobacco brown and slightly velvety to the touch when young, becoming smooth as the fruit body matures. The flesh is white, producing blue stains which change color.[4] The mushroom has a mild to pungent smell and a mild to bitter taste.[4] The spore print is reddish-brown.[4]
Similar species
[edit]It might overlap with P. atrofuscus and P. olivaceobrunneus.[4] Tylopilus griseocarneus[4] and T. indecisus are similar.[3]
Distribution and habitat
[edit]It is a widespread species of Europe, especially in the north, but is nowhere particularly common. It can be found in northern North America.[4]
The fruit bodies appear from late summer to autumn,[4] often in small groups, associated with broad-leaved trees such as beech[4] and oak.
Edibility
[edit]One guide lists the species as edible,[5] while another considers it "probably edible".[6]
References
[edit]- ^ "Porphyrellus porphyrosporus (Fr. & Hök) E.-J. Gilbert 1931". MycoBank. International Mycological Association. Archived from the original on 2011-09-30. Retrieved 2011-10-01.
- ^ a b Trudell, Steve; Ammirati, Joe (2009). Mushrooms of the Pacific Northwest. Timber Press Field Guides. Portland, OR: Timber Press. p. 228. ISBN 978-0-88192-935-5. Archived from the original on 2024-04-30. Retrieved 2024-04-30.
- ^ a b c Davis, R. Michael; Sommer, Robert; Menge, John A. (2012). Field Guide to Mushrooms of Western North America. Berkeley: University of California Press. p. 315. ISBN 978-0-520-95360-4. OCLC 797915861. Archived from the original on 2022-06-03. Retrieved 2024-04-30.
- ^ a b c d e f g h Audubon (2023). Mushrooms of North America. Knopf. p. 351. ISBN 978-0-593-31998-7.
- ^ Phillips, Roger (2010). Mushrooms and Other Fungi of North America. Buffalo, NY: Firefly Books. p. 281. ISBN 978-1-55407-651-2.
- ^ Wood M, Stevens F. "Tylopilus porphyrosporus". California Fungi. Archived from the original on 2017-12-09. Retrieved 2011-02-23.
Further reading
[edit]- Mushrooms and Toadstools of Britain and Europe, Stefan Buczacki (HarperCollins, 1992)