Heteroradulum yunnanensis sp. nov. (Auriculariales, Basidiomycota) evidenced by morphological characters and phylogenetic analyses in China Author Guan, Qian-Xin Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming 650224, P. R. China & College of Biodiversity Conservation, Southwest Forestry University, Kunming 650224, P. R. China Author Liu, Chao-Mao College of Biodiversity Conservation, Southwest Forestry University, Kunming 650224, P. R. China Author Zhao, Tang-Jie Wenshan Forestry Research Institute, Wenshan, Yunnan 663300, P. R. China Author Zhao, Chang-Lin Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming 650224, P. R. China & College of Biodiversity Conservation, Southwest Forestry University, Kunming 650224, P. R. China & Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming 650224, P. R. China text Phytotaxa 2020 2020-03-25 437 2 51 59 http://dx.doi.org/10.11646/phytotaxa.437.2.1 journal article 3957 10.11646/phytotaxa.437.2.1 cfc7ee81-1d59-48be-9568-08af71afda09 1179-3163 5585883

TABLE 2. A morphological comparison between Heteroradulum yunnanensis and four similar species in the genus.

Taxon	Habit	Hymenial surface	Hyphal system	Basidia (µm)	Basidiospores (µm)	Cystidia (µm)
Heteroradulum adnatum	Annual	White	Monomitic	17.3–21.8 × 9.2–11.3	11.4–14.2 × 5.2–7.2	26–95 × 4–10
H. deglubens	Annual or perennial	Greyish pink	Monomitic	26–44.8 × 9.3–14	13–20.4 × 6–8.2	31–44 × 5–6
H. kmetii	Perennial	Pinkish grey	Dimitic	27.4–45.4 × 9.7–14.7	14.1–24.9 × 5.8–9.7	27–40 × 4–7.5
H. spinulosum	Annual	Ochraceous to pinkish grey	Dimitic	17.4–29.8 × 9.2–12.4	11.7–19.8 × 5.9–7.4	23–45 × 6–7
H. yunnanensis	Annual	White	Monomitic	28–41 × 9–14	15–24.5 × 4.5–8.5	13–35 × 2–6