<i>Hericium americanum</i> var. <i>roseum</i> —a new North American taxon

A rarely collected rose-pink-colored <i>Hericium americanum</i> has now been documented with in situ images obtained by 11 different field naturalists in the northeastern United States and eastern Canada since 2018. These mushroom enthusiasts responded to a request for images and specimens of a rarely documented rose-pink-colored tooth fungus discussed in the comments section of a description of <i>Hericium americanum</i> and <i>H. coralloides</i> in <i>Mushrooms of the Northeastern United States and Eastern Canada</i>. Five of those finds were collected, preserved by drying, and sent to the authors for analysis. This strikingly colored tooth fungus is confirmed as a variant of <i>H. americanum</i> using morphological and molecular data (nuc rDNA ITS1-5.8S-ITS2 and partial nuc 28S rDNA D1-D6 regions) and proposed here as a new variety.