Ramaricium yunnanense sp. nov. (Gomphaceae, Gomphales) from China Author Gu, Jin-Ying 0000-0001-7653-4699 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 & fungijinyinggu @ 163. com; https: // orcid. org / 0000 - 0001 - 7653 - 4699 Author Zhao, Chang-Lin 0000-0002-8668-1075 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 & Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, China & fungichanglinz @ 163. com; https: // orcid. org / 0000 - 0002 - 8668 - 1075 text Phytotaxa 2022 2022-11-17 573 1 123 130 http://dx.doi.org/10.11646/phytotaxa.573.1.8 journal article 189450 10.11646/phytotaxa.573.1.8 446f1efb-b804-471d-9e41-3038d9e9fe80 1179-3163 7329573 Ramaricium yunnanense C.L. Zhao , sp. nov. Figs. 2 , 3 MycoBank no.: MB 841259 Holotype :— CHINA . Yunnan Province , Puer , Jingdong County , Wuliangshan National Nature Reserve , E 100°32′ , N 24°36′ , alt. 1600 m , on the angiosperm trunk, 5 October 2017 , CLZhao 4179 ( SWFC !), GenBank No. (ITS ON054914 ; nLSU MZ 881949 ). Etymology:— yunnanense (Lat.) : the epithet refers to the Province in China “ Yunnan ” where the type species was collected. Description:— Basidiomata annual, resupinate, cottony, without odor or taste when fresh, becoming flocculent on drying, up to 7 cm × 4 cm (length × breadth), up to 300 µm thick. Hymenial surface smooth, white when fresh and drying. Margin sterile, fimbriate, white, up to 1.5 mm wide. Hyphal system monomitic, generative hyphae colorless, thin - walled, bearing clamp connections, IKI–, CB–; tissues unchanged in KOH. Subiculum generative hyphae colorless, more or less interwoven, thin - walled, rarely branched, presence of encrusted hyphae, 2.5–5 µm in diameter. Hymenium cystidia and cystidioles absent; basidia pleural, clavate, with four sterigmata, and a basal clamp, slightly constricted in the middle to somewhat sinuous, 14–23 × 6–8µm; basidioles dominant, in shape similar to basidia, but slightly smaller. Basidiospores ellipsoid to subglobose, colorless, thin - walled, ornamented, IKI–, cyanophilous, (3.8)4 – 5( – 5.4) × 3 – 4.5(4.7) µm, L = 4.53 µm, W = 3.70 µm, Q = 1.22 ( n = 30 / 1 ). Additional specimen ( paratype ) examined:— CHINA . Yunnan Province , Puer , Jingdong County , Wuliangshan National Nature Reserve , E 100°32′ , N 24°36′ , alt. 1600 m , on the angiosperm trunk, 5 October 2017 , CLZhao 4158 ( SWFC !) , GenBank No. (ITS MZ 746097 ; nLSU MZ 881948 ) .