• WordNet 3.6
    • n Polyporus type genus of the Polyporaceae; includes important pathogens of e.g. birches and conifers
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Webster's Revised Unabridged Dictionary
    • n Polyporus (Bot) A genus of fungi having the under surface full of minute pores; also, any fungus of this genus.Polyporus fomentarius was formerly dried and cut in slices for tinder, called amadou. Polyporus betulinus is common in America, and forms very large thick white semicircular excrescences on birch trees. Several species of Polyporous are considered edible.
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Century Dictionary and Cyclopedia
    • n polyporus A very large, widely distributed genus of hymenomycetous fungi, typical of the order Polyporiaceæ, having the hymenium lining long, narrow, round, or angular tubes. They are very familiar objects, forming little shelves or brackets attached to dead or decaying wood, some being very small, others several or many inches in circumference. P. officinalis is the white or purging agaric, or larch-agaric, used internally to check sweats, sometimes as a purgative and emetic, and externally as a styptic. See agaric and amadou.
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Chambers's Twentieth Century Dictionary
    • n Polyporus pō-lip′or-us a large genus of pore-bearing fungus, which grows on trees, from which amadou is prepared.
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Webster's Revised Unabridged Dictionary
NL., fr. Gr. poly`s many + a pore
Chambers's Twentieth Century Dictionary
Gr. polys, many, poros, a passage.


In literature:

That vivid yellow on a far stump is the sulphur-colored polyporus.
"Some Summer Days in Iowa" by Frederick John Lazell
Thome says that Boletus laricis and Polyporus fomentarius yield the "amadou" of commerce.
"Among the Mushrooms" by Ellen M. Dallas and Caroline A. Burgin
Bracket fruit form of Polyporus borealis growing from wound.
"Studies of American Fungi. Mushrooms, Edible, Poisonous, etc." by George Francis Atkinson
It equals Polyporus polyporus.
"The Mushroom, Edible and Otherwise" by M. E. Hard
Growing on old wood, bark, Polyporus, etc.
"The Myxomycetes of the Miami Valley, Ohio" by A. P. Morgan
The edible Polyporeae are found in the genera Boletus, Strobilomyces, Gyrodon, Boletinus, Polyporus, and Fistulina.
"Student's Hand-book of Mushrooms of America, Edible and Poisonous" by Thomas Taylor
At these words Ladislaus Szekely changed colour as often as a genuine opal, or as a fractured polyporus fungus.
"The Slaves of the Padishah" by Mór Jókai