Umbelopsis Amos & H.L. Barnett, Mycologia 58(5): 807 (1966)
Index Fungorum number: IF 10350; Mycobank number: MB 10350
Notes – Umbelopsis was introduced Amos and Barnett (1966) and later Meyer and Gams (2003) included Micromucor species based on molecular evidence. Morphologically Umbelopsis species are characterised by velvety and often coloured colonies, aerial hyphae, small or absent columellae, sporangiophores which often arise erectly from a vesicle; and sporangiospores which vary in shape and are similar in colour to the sporangia (Linnemann 1941; Linnemann 1969; Meyer and Gams 2003). For the taxonomic treatment of this genus, we follow Wang et al. (2022a, b) (Fig. 1).
Figure 1 – Phylogram generated from RAxML analysis based on combined ITS, SSU, and LSU sequence data of Umbelopsis isolates. Related sequences were obtained from GenBank. Twenty-eight taxa are included in the analyses, which comprise 2264 characters including gaps. Tree is rooted to Mortierella antarctica CBS 609.70. Tree topology of the ML analysis was similar to the BI. The best scoring RAxML tree with a final likelihood value of − 7485.315022 is presented. The matrix had 320 distinct alignment patterns, with 0.36% of undetermined characters or gaps. Estimated base frequencies were as follows; A=0.282345, C=0.186030, G=0.243519, T=0.288107; substitution rates AC=0.885256, AG=3.840307, AT=1.754600, CG=0.329086, CT=6.911236, GT=1.000000; gamma distribution shape parameter α=0.179154 Bootstrap support values for ML equal to or greater than 70% and Bayesian posterior probabilities equal to or greater than 0.7 BYPP are given above the nodes. The scale bar indicates 0.02 changes. The isolates obtained in this study are in blue and ex-types are in black bold
Species