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Detailed close-up of light brown fungus on white birch log in forest.
Fungus on the tree trunk. Summer background.
Withering umbrella resembling fungus growing in numerous places out of an old dying tree
Orange fungus on an old birch trunk
The surface of the old bark is brown
Winter time : three Bracket Fungus hanging on a birch tree trunk.
Mushrooms Fomes fomentarius on the trunk of an old birch in autumn in the forest, macro photography.
Birch fungus - Piptoporus betulinus on a birch at the Veluwe, Netherlands.
Mossy maze polypore, Cerrena unicolor growing on birch tree
Mushroom on tree trunk, New York, USA
Fomes fomentarius, commonly known as the tinder fungus
Close-up of a single fruiting body of the Birch Polypore (Fomitopsis betulina), growing on a lichen-encrusted trunk of a small Silver Birch (Betula pendula) tree in central Scotland.
fungus on a tree trunk
A close-up of fungi growing on a log. Shallow depth of field.
Mushrooms growing along a hiking trail in Ontario, Canada.
autum in forest: single daedaleopsis confragosa growing round a birch plant bark.
A fungi living on a dead birch tree.
Close-up of a Frullania species of leafy liverwort on yellow birch bark in Connecticut. A fascinating part of the landscape, especially in winter and early spring before most plants re-grow. Liverwort is a primitive plant that undergoes photosynthesis but lacks roots and a vascular system. Structures called rhizoids enable liverworts to stick to the surface of trees, rocks and soil. They reproduce via spores. Liverworts began developing on earth about 470 million years ago. Epiphytic liverworts do not harm trees. The yellow birch (Betula alleghaniensis) is an eastern tree with papery, peeling, flammable bark.
mushrooms grow in the forest on a fallen tree
Mushroom composition  on a birch trunk in the autumn woodland
Fomes fomentarius. Fomes fomentarius growing on birch. A tinder mushroom grown on a tree trunk. Several tinder mushrooms have grown on a birch tree.
fungus on a tree trunk outdoor. Fungal disease. Close-up.
Two birch polypore growing on the trunk
A big old birch trunk lies in the middle of the forest covered with green moss and mushrooms. Forest landscapes and natural autumn backgrounds.
Fomitopsis pinicola (Swartz ex Fr.) Karsten. Fichtenporling Unguline marginee. Fruit body perennial; no stem. Up to 38cm across, 20cm wide, 15cm thick, convex to hoof-shaped, with a thickened, rounded margin; upper surface with a sticky reddish-brown resinous crust, then grayish to brown or black; hard, woody, smooth or glossy-looking. Tubes up to 6mm deep per season; cream to buff. Pores 5-6 per mm, circular; surface cream-colored. Flesh up to 12cm thick, corky, hard, woody; cream to buff, sometimes zoned. Spores cylindrical ellipsoid, smooth, 6-9 x 3.5-4.5µ. Deposit whitish. Hyphal structure trimitic; clamps present. Habitat on dead conifer stumps and logs and occasionally on living trees. Found throughout Europe and most of North America except the South from Texas eastward. Season all year. Not edible. Comment The most commonly collected polypore in North America. The cap colors are rather variable (source R. Phillips).\n\nThis beautiful Species is nowadays quite common in the Netherlands and growing on different Trees.
Chaga mushroom on birch
Stereaceae fungi on firewood
Piptoporus betulinus. Tinder fungus on birch
Hoof fungus (Fomes fomentarius) on yellow birch tree trunk in the Connecticut forest. This fungus is named for its resemblance to a horse's hoof. Also called tinder conk. According to Wikipedia, 5,000-year-old Ötzi the Iceman (a mummified body found in the Alps in 1991) carried four pieces of F. fomentarius, presumably for tinder.
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