Candolleomyces rubrobrunneus

(3.6) Candolleomyces rubrobrunneus complex Notes:— In the ITS-only phylogeny (Fig. 4B), five collections of ours and the holotype collection of Candolleomyces rubrobrunneus established a rather heterogenous monophyletic group without significant support. In the four-locus phylogeny (Fig. 4A), only five of our collections with complete four-locus data were analysed for this group, and they formed a distinct, homogenous monophyletic group with significant support. This group is referred to as the Candolleomyces rubrobrunneus complex in this study, characterized by basidiomata that are usually either solitary or caespitose, with a reddish-brown pileus and a terrestrial habit. More collections are required to confirm the species number in this complex. Legitimately proposed species recognized in this complex:— Cd. rubrobrunneus Nayana & C.K Pradeep (2024, holotype sequenced). Collections sequenced in this study:— China, Guangdong Province, Guangzhou City, elevation 5–30 m, 2023, Jia Y. Lin & Kun L. Yang, K23258 (HTBM0773), L2344 (HTBM0877), L23426 (HTBM1407), L23428 (HTBM1409), and L23468 (HTBM1449).