yellow unicorn Entoloma
... that the yellow unicorn Entoloma is so named because of the sharp umbo on the top of its cap?
... that the <b id="mwCBw"><a href="./Entoloma_murrayi" id="mwCB0" rel="mw:WikiLink" title="Entoloma murrayi">yellow unicorn Entoloma</a></b> <i id="mwCB4">(pictured)</i> is so named because of the sharp <a href="./Umbo_(mycology)" id="mwCB8" rel="mw:WikiLink" title="Umbo (mycology)">umbo</a> on the top of its <a href="./Pileus_(mycology)" id="mwCCA" rel="mw:WikiLink" title="Pileus (mycology)">cap</a>?