Candolleomyces efflorescens (Sacc.) D. Wacht. & A. Melzer, 2020

Yang, Kun L., Lin, Jia Y., Li, Guang-Mei & Yang, Zhu L., 2025, Introducing one new genus and two new species of Psathyrellaceae (Basidiomycota, Agaricales), with notes on Candolleomyces and Ephemerocybe, Phytotaxa 702 (1), pp. 1-28 : 15

(3.2) Candolleomyces efflorescens complex

Notes:— In the ITS-only phylogeny ( Fig. 4B ), two collections of ours, along with one collection labeled as Candolleomyces albipes and one collection labeled as Cd. efflorescens established a monophyletic group with low internal pairwise variations (generally less than 1%) by significant support. In the four-locus phylogeny ( Fig. 4A ), only two of our collections with complete four-locus data were analysed for this group, and they formed a distinct monophyletic group with significant support. This group is referred to as the Candolleomyces efflorescens complex in this study, characterized by typically caespitose basidiomata with a pinkish brown pileus, and a terrestrial to lignicolous habit.

Legitimately proposed species recognized in this complex:— Cd. albipes (Murrill) D. Wächt. & A. Melzer (2020) , and Cd. efflorescens (Sacc.) D. Wächt. & A. Melzer (2020) .

Collections sequenced in this study:— China, Guangdong Province, Guangzhou City, elevation 30 m, 2023, Kun L. Yang & Jia Y. Lin, K2310 ( HTBM0525 ) and K23142 ( HTBM0657 ).

Figures

FIGURE 4. Phylogeny of Candolleomyces inferred from concatenated ITS-nrLSU-tef-1α-β-tub alignment (A; all samples with sequence data complete in the four loci) or ITS alignment (B). Nodes are annotated if supported by ≥50% MLB or ≥0.9 BPP. Branches shortened to fit the page are indicated by two diagonal lines, followed by the number of times shortened. Collections sequenced in this study are highlighted in gold. Holotypes, epitypes, and neotypes are indicated by HT, ET, and NT, respectively. Photos and line drawings of our collections, and species delimitation results are attached.