The Bracket fungus reference article from the English Wikipedia on 24-Jul-2004
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Bracket fungus

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bracket fungus
A bracket fungus(Pycnoporus sp.) with a tough, woody cap

Bracket fungi are fungi notable for bearing fruiting bodies (conk) as or in a "bracket": a grouping of individual mushroom caps that lie in a close planar grouping of separate or interconnected horizontal rows. Brackets can range from only a single row of a few caps, to dozens of rows of caps that can weigh several hundred pounds. Many types of bracket fungi are polypores.

Some well known bracket fungi include the Oyster mushroom and Sulphur shelf.

bracket fungus
A bracket fungus, probably the Sulphur Shelf (Laetiporus sulphureus),
this one grooved and hairy, especially at the margins