Tylopilus felleus var. alutarius (Fr.) P.Karst. (1882)
Dictyopus felleus (Fr.) Quél. (1886)
Rhodoporus felleus (Fr.) Quél. (1888)
Tylopilus alutarius (Fr.) Henn. (1898)
Boletus felleus var. minor Coker & Beers (1943)
Tylopilus felleus var. uliginosus A.H.Sm. & Thiers (1971)
Tylopilus felleus var. minor (Coker & Beers) Pilát & Dermek (1974)
Species of fungus
Tylopilus felleus
Mycological characteristics
Pores on hymenium
Cap is convex
Hymenium is adnate
Stipe is bare
Spore print is buff
to pink
Ecology is mycorrhizal
Edibility is inedible
Tylopilus felleus, commonly known as the bitter bolete or the bitter tylopilus, is a fungus of the bolete family. Its distribution includes east Asia, Europe and eastern North America, extending south into Mexico and Central America. A mycorrhizal species, it grows in deciduous and coniferous woodland, often fruiting under beech and oak. Its fruit bodies have convex to flat caps that are some shade of brown, buff or tan and typically measure up to 15 cm (6 in) in diameter. The pore surface is initially white before turning pinkish with age. Like most boletes it lacks a ring and it may be distinguished from Boletus edulis and other similar species by its unusual pink pores and the prominent dark-brown net-like pattern on its stalk.
French mycologist Pierre Bulliard described this species as Boletus felleus in 1788 before it was transferred into the new genus Tylopilus. It is the type species of Tylopilus and the only member of the genus found in Europe. Tylopilus felleus has been the subject of research into bioactive compounds that have been tested for antitumour and antibiotic properties. Although not poisonous it is generally considered inedible owing to its overwhelming bitterness.
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^Cite error: The named reference Smith 1971 was invoked but never defined (see the help page).
this species as Boletus felleus in 1788 before it was transferred into the new genus Tylopilus. It is the type species of Tylopilus and the only member of...
genera. These include such as Boletus scaber, now Leccinum scabrum, Tylopilusfelleus, Chalciporus piperatus and Suillus luteus. Most boletes have been...
with Tylopilus plumbeoviolaceus; according to one source, it "is one of the most remarkable and easily identified boletes in the USA." Tylopilus violatinctus...
pores are about 1–2 mm wide. The mushroom is similar in appearance to Tylopilusfelleus, but unlike that species, has a greenish cap when young. T. virens...
appearance to Tylopilusfelleus, but is distinguishable from that species by its smaller spores. Chen CM, Ho YS, Chou WN, Lin TC (2004). "Four Tylopilus Species...
Tylopilus brevisporus is a bolete fungus found in Australia. It is similar in appearance to Tylopilusfelleus, but is distinguishable from that species...
distributed bolete Tylopilusfelleus is similar in appearance to T. rhoadsiae, but has a very bitter taste, and a darker cap. Tylopilus rhodoconius has a...
bruising. It is often confused with the very bitter and unpalatable Tylopilusfelleus, but can be distinguished by the reticulation on the stalk; in porcini...
bitter species Caloboletus calopus and the aptly named bitter bolete (Tylopilusfelleus), with a taste compared to bile, as well as some orange-capped species...
in 2008, it was found in the mycorhizosphere of the bolete fungus Tylopilusfelleus. The Gram-positive cells are rod-shaped, with dimensions of 3.0–5...
(1910–1983), it is one of three Tylopilus species found in the country; the others are T. pseudoscaber and T. felleus. Tylopilus sultanii resembles T. pseudoscaber...
to species such as Boletus edulis, Phylloporus rhodoxanthus, and Tylopilusfelleus. Within the Boletales clade (a group of related species roughly equivalent...
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