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Gills adnate
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Collybia.
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Gills sinuate
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Mycena.
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Gills decurrent
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Omphalia.
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Plants tough, fleshy, membranaceous, leathery,
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Stem central,
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Gills simple
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Marasmius.
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Gills branched
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Xerotus.
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B. Plants gelatinous and leathery
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Heliomyces.
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Stem lateral or wanting,
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Edge of gills serrate
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Lentinus.
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Edge of gills entire
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Panus.
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Gills fold-like, irregular
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Trogia.
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Edge of gills split longitudinally
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Schizophyllum.
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C. Plants corky or woody,
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Gills anastomosing.
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Lenzites.
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II. Spores rosy or salmon color.
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A. Stem central.
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Gills free, stem easily separating from pileus.
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Without cartilaginous stem,
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Volva present and distinct, no ring
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Volvaria.
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Without a volva, with a ring
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Annularia.
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Without a volva and without a ring
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Pluteus.
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B. Stem fleshy to fibrous, margin of pileus at first incurved,
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Gills sinuate or adnate
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Entoloma.
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Gills decurrent
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Clitopilus.
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C. Stem eccentric or none, pileus lateral
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Claudopus.
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Gills decurrent, pileus umbilicate
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Eccilia.
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Gills not decurrent, pileus torn into scales, and slightly convex, margin at first involute
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Leptonia.
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Pileus bell-shaped, margin at first straight
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Nolanea.
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III. Spores rusty-brown or yellow-brown.
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A. Stem not cartilaginous,
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a. Stem central,
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With a ring,
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Ring continuous
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Pholiota.
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