Summary: | Species of <i>Absidia</i> are distributed widely in the environment, while their diversity is insufficiently studied. Three new species, <i>A. frigida</i>, <i>A. gemella</i> and <i>A. longissima</i>, are proposed herein from Xinjiang and Yunnan in China based on phylogenetic, morphological and physiological evidence. According to maximum likelihood (ML), maximum parsimony (MP) and Bayesian inference (BI) analyses, the phylogenetical results suggest that <i>A. frigida</i>, <i>A. gemella</i> and <i>A. longissima</i> are closely related to <i>A. psychrophilia</i>, <i>A. turgida</i> and <i>A. zonata</i> and <i>A. koreana</i>, respectively, based on ITS and LSU rDNA sequences. <i>Absidia frigida</i> is characterized by a lower growth temperature, which does not grow above 24 °C. It differs from <i>A. psychrophilia</i> by sporangiophores, sporangia, columellae, collars and projections. <i>Absidia gemella</i> is distinguished from <i>A. turgida</i> by hypha, sporangiospores, sporangia, projections and sporangiophores. <i>Absidia longissima</i> is discriminated from <i>A. zonata</i> and <i>A. koreana</i> by sporangiophores, columellae and collars. The three new species are described and illustrated in this article.
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