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Inonotus obliquus.   Click a photo to enlarge it.   back to list

synonyms: Birch Conk, Chaga, Clinker Polypore
Inonotus obliquus Mushroom
Ref No: 6713
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location: North America, Europe
edibility: Inedible
fungus colour: Black or blackish
normal size: 5-15cm
cap type: Other
stem type: Lateral, rudimentary or absent
flesh: Pore material cannot be seperated from flesh of the cap
spore colour: Light to dark brown
habitat: Grows in woods, Grows on wood

Inonotus obliquus (Fr.) Pilat Birch Conk, Chaga, Clinker Polypore, Fruit body sterile conk 25-40cm across; black; deeply cracked, very hard and brittle when dry. Fertile portion 5m thick, crust-like, thin; dark brown. Tubes 3-l0mm deep, brittle, usually split in front. Pores 6-8 per mm, circular; whitish becoming dark brown. No stem. Flesh corky, faintly zoned; bright yellowish brown. Spores broadly ellipsoid to ovoid, smooth, 9-10 x 5.5-6.5µ. Setae present. Habitat beneath the bark or outer layers of wood on living, dead, standing, or fallen trees, erupting into conspicuous black conks, generally on birch, elm, and alder. Found in northern North America, and northern Europe to Russia. Season all year. Not edible although it comes highly recomended for cancer treatments, it is this fungus that is discussed by Solzhinitsyn in his book 'The Cancer Ward', a tea made from the fungus is drunk daily, the fungus has been found to contain inotodiol which has active anti-tumor properties. (It is only the specimens growing on Birch trees that seem to have this property). It has also been shown to have antiviral activity against HIV.

Members' images and comments

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Andy Zamora (United States) - 25 May 2015

Found at Jaycee park, in Wichita Falls, Texas, on May 25, 2015
Inonotus obliquus
David Vasko (United States) - 27 June 2014

Is this chaga I found it on this beech tree? The underside is smooth as you can see in pic
Inonotus obliquus
craig campana (United States) - 15 March 2013

found in St.louis MO on 03/14/13 just wish i was 20 ft tall and had a hammer and chisel with me
Inonotus obliquus
craig campana (United States) - 14 March 2013

found march 12 2013 in St.Louis MO
Inonotus obliquus
mike ponchaud (United States) - 15 February 2011

10lb Chaga!!! Yellow Birch Crystal Falls, MI
Inonotus obliquus
Mirosław Wantoch-Rekowski (Poland) - 23 January 2011

Gdansk Przymorze Poland
Inonotus obliquus
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