taxonID	type	description	language	source
66EB241B65595628B2FECBB90D960817.taxon	description	Figs 9, 10	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
66EB241B65595628B2FECBB90D960817.taxon	diagnosis	Diagnosis. The new species is distinguished from all other Efibula species by its cracked, slightly gray to gray hymenophore with tuberculate, generative hyphae bearing simple septa, clavate basidia, and ellipsoid basidiospores (4 – 5.5 × 2.5 – 3 µm).	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
66EB241B65595628B2FECBB90D960817.taxon	etymology	Etymology. Murina (Lat.): referring to the species having furry mouse-like hymenial surface.	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
66EB241B65595628B2FECBB90D960817.taxon	description	Description. Basidiomata annual, resupinate, closely adnate, membranous, up to 8 cm long, 1 cm wide, and 200 µm thick. Hymenial surface tuberculate, slightly gray when fresh, gray upon drying, cracked; margin slightly gray, up to 1.5 mm. Hyphal system monomitic, generative hyphae bearing simple septa, IKI –, CB –; tissues unchanged in KOH. Subiculum generative hyphae colorless, thin- to slightly thick-walled, smooth, moderately branched, loosely interwoven, 1.5 – 4 µm in diameter; subhymenium thin, generative hyphae colorless, thin- to slightly thick-walled, smooth, moderately branched, interwoven, 1.5 – 3.5 µm in diameter. Cystidia and cystidioles absent. Basidia clavate, with four sterigmate, with a simple septum at the base, 15 – 24 × 4 – 6 µm, usually with some small oily drops, smooth, thin-walled, basidioles dominant, in shape similar to basidia, but slightly smaller. Basidiospores ellipsoid, colorless, thin-walled, smooth, usually with some small oily drops, IKI –, CB –, 4 – 5.5 (– 6) × 2.5 – 3 µm, L = 4.76 µm, W = 2.9 µm, Q = 1.63 – 1.64 (n = 60 / 2).	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
F3E78D6F7B2550C497F7C4750E3C5AF9.taxon	type_taxon	Type species. Efibula tropica Sheng H. Wu	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
F3E78D6F7B2550C497F7C4750E3C5AF9.taxon	description	Description. Basidiomata annual, resupinate, adnate, at first orbicular and then becoming confluent. Hymenial surface white, whitish buff to “ Amber, ” thinning out indeterminately, sometimes pruinose under the lens. Hyphal system monomitic; generative hyphae simple-septate, smooth, thin- to slightly thick-walled. Cystidia absent or present, rarely fusiform cystidia present in the hymenium. Basidia cylindrical to clavate with a stalk-like base, sometimes slightly constricted without a basal clamp, producing four sterigmata. Basidiospores broadly ellipsoid, smooth, thin-walled (Chen et al. 2021, 2022; Li et al. 2022).	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
B6E50500CD9E5FF5999ED5BA210487C3.taxon	description	Figs 11, 12	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
B6E50500CD9E5FF5999ED5BA210487C3.taxon	diagnosis	Diagnosis. Efibula yaoshanensis differs from other species in the genus by cream, brownish-orange to cinnamon-buff hymenial surface, thin-walled generative hyphae bearing simple septa, and ellipsoid basidiospores (5 – 6.5 × 3 – 4 µm).	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
B6E50500CD9E5FF5999ED5BA210487C3.taxon	etymology	Etymology. Yaoshanensis (Lat.): referring to the locality (Yaoshan) of the type specimen.	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
B6E50500CD9E5FF5999ED5BA210487C3.taxon	description	Description. Basidiomata annual, resupinate, closely adnate, membranous to subceraceous, up to 7 cm long, 1.8 cm wide, and 200 µm thick. Hymenial surface smooth, cream when fresh, brownish-orange to cinnamon-buff upon drying; margin thinning out, white to cream, up to 1 mm. Hyphal system monomitic; generative hyphae bearing simple septa, colorless, thin-walled, slightly encrusted with crystals on some hyphae, 1.8 – 3.2 µm in diameter; IKI –, CB –; tissues unchanged in KOH. Cystidia and cystidioles absent. Basidia long clavate, four sterigmate, with a simple septum at the base, 20 – 27 × 4 – 6 µm, smooth, thin-walled, basidioles dominant, in shape similar to basidia, but slightly smaller. Basidiospores ellipsoid, colorless, thin-walled, smooth, IKI –, CB –, 5 – 6.5 × 3 – 4 µm, L = 5.56 µm, W = 3.21 µm, Q = 1.74 (n = 30 / 1).	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
F616F95FDB2E5DE688C9E226162FA15C.taxon	description	Figs 13, 14	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
F616F95FDB2E5DE688C9E226162FA15C.taxon	diagnosis	Diagnosis. Efibula zhaotongensis can be distinguished from other species by its white to slightly cream hymenial surface grandinioid, generative hyphae with clamp connections, cylindrical basidiospores (4 – 5.5 × 2 – 3.5 µm).	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
F616F95FDB2E5DE688C9E226162FA15C.taxon	etymology	Etymology. Cremea (Lat.): referring to the species having cream hymenial surface.	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
F616F95FDB2E5DE688C9E226162FA15C.taxon	description	Description. Basidiomata annual, resupinate, coriaceous, up to 9 cm long, 2 cm wide, and 300 µm thick in section. Hymenial surface grandinioid, white to slightly cream when fresh, cream upon drying; margin white to slightly cream, up to 1 mm. Hyphal system monomitic; generative hyphae with clamp connections, colorless, thin-walled, moderately branched, encrusted with crystals, 1.8 – 4.1 µm in diameter, IKI –, CB –; tissues unchanged in KOH. Subiculum generative hyphae dense, subparallel arrangement; subhymenium composed of strongly agglutinated vertical hyphae. Cystidia and cystidioles absent. Basidia clavate, with 4 sterigmata and a basal clamp connection, 17 – 25 × 4 – 5 µm, smooth, thin-walled, basidioles dominant, in shape similar to basidia, but slightly smaller. Basidiospores cylindrical, colorless, thin-walled, smooth, IKI –, CB –, 4 – 5.5 × 2 – 3.5 µm, L = 4.76 µm, W = 2.78 µm, Q = 1.72 (n = 60 / 2).	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
05E1822A709F57A894F5A4C67D55D2A5.taxon	type_taxon	Type genus. Irpex Fr. 1825.	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
264A754721DB5DCB8D2293192E33C6CA.taxon	description	Figs 5, 6	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
264A754721DB5DCB8D2293192E33C6CA.taxon	diagnosis	Diagnosis. Odentinium aurantium is characterized by soft corky basidiomata, cream to pale yellow hymenial surface with odontioid, clavate basidia clavate and globose basidiospores (3 – 4 × 3 – 3.5 µm).	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
264A754721DB5DCB8D2293192E33C6CA.taxon	etymology	Etymology. Aurantium (Lat.): referring to the pale yellow hymenial surface.	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
264A754721DB5DCB8D2293192E33C6CA.taxon	description	Description. Basidiomata annual, resupinate, soft corky when fresh, hard corky when dry, up to 5.5 cm long, 1.5 cm wide, and 0.2 mm thick. Hymenial surface odontioid, aculei 4 – 6 per mm, the length of aculei up to 0.1 mm, cream when fresh, cream to pale yellow upon drying. Sterile margin cream, thin, up to 1 mm. Hyphal system monomitic; generative hyphae with clamp connections, colorless, thin-walled, smooth, moderately branched, loosely interwoven, 2 – 3.7 µm in diameter, IKI –, CB –; tissues unchanged in KOH. Cystidia numerous, thick-walled, cylindrical, strongly encrusted, 65 – 182 × 10 – 12.5 µm. Cystidioles absent. Basidia clavate, with 4 sterigmata and a basal clamp connection, 11 – 23 × 4 – 4.5 µm, smooth, thin-walled, basidioles dominant, in shape similar to basidia, but slightly smaller. Basidiospores globose, colorless, thin-walled, smooth, with one oil drop, IKI –, CB –, 3 – 4 × 3 – 3.5 µm, L = 3.43 µm, W = 3.26 µm, Q = 1.12 (n = 60 / 2).	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
B7FC5CB59D895886AD454290D326AAC8.taxon	description	Figs 7, 8	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
B7FC5CB59D895886AD454290D326AAC8.taxon	diagnosis	Diagnosis. Odentinium cremeum differs from other species by its cream to slightly buff hymenophore, clamed generative hyphae, and ellipsoid basidiospores (3.5 – 4.5 × 3 – 3.5 µm).	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
B7FC5CB59D895886AD454290D326AAC8.taxon	etymology	Etymology. Cremeum (Lat.): referring to the species having cream-colored hymenial surface.	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
B7FC5CB59D895886AD454290D326AAC8.taxon	description	Description. Basidiomata annual, resupinate, leathery, up to 6.5 cm long, 3 cm wide, and 200 µm thick. Hymenial surface odontioid, aculei 3 – 4 per mm, the length of aculei up to 0.1 mm, slightly cream when fresh, turning to cream upon drying. Sterile margin white to slightly cream, thin, up to 1 mm. Hyphal system monomitic; generative hyphae with clamp connections, colorless, thin-walled, and strongly encrusted with crystals, moderately branched, interwoven, 1.5 – 4 µm in diameter, IKI –, CB –; tissues unchanged in KOH. Cystidia numerous, thick-walled, cylindrical, strongly encrusted entirely, 84 – 188 × 7 – 13 µm, cystidioles absent. Basidia clavate, with 4 sterigmata and a basal clamp connection, 12 – 21 × 5 – 6 µm, smooth, thin-walled, basidioles dominant, in shape similar to basidia, but slightly smaller. Basidiospores ellipsoid, colorless, thin-walled, smooth, with one oil drop, IKI –, CB –, 3.5 – 4.5 × 3 – 3.5 µm, L = 4.1 µm, W = 3.16 µm, Q = 1.29 – 1.33 (n = 150 / 5).	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
54E650FAF6B4581D9CB4D4C06CBA3681.taxon	etymology	Etymology. Odentinium (Lat.): referring to the odontioid hymenial surface.	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
54E650FAF6B4581D9CB4D4C06CBA3681.taxon	type_taxon	Type species. Odentinium cremeum Y. L. Deng & C. L. Zhao, sp. nov.	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
54E650FAF6B4581D9CB4D4C06CBA3681.taxon	description	Description. Basidiomata annual, resupinate, leathery. Hymenial surface odontioid, aculei 3 – 6 per mm, the length of aculei up to 0.1 mm, cream to pale yellow. Hyphal system monomitic; generative hyphae with clamp connections, colorless, thin-walled, smooth, moderately branched. Cystidia numerous, thick-walled, cylindrical, strongly encrusted. Cystidioles absent. Basidia clavate, with four sterigmata and a basal clamp connection. Basidiospores ellipsoid, colorless, thin-walled, smooth.	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
A46625D2849E52BFB4918C0D2FD5F4DF.taxon	description	Figs 15, 16	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
A46625D2849E52BFB4918C0D2FD5F4DF.taxon	diagnosis	Diagnosis. Phanericium bambusacearum differs from other species in the genus by cream, buff to pale-yellow, cracked hymenophore, generative hyphae bearing simple septa, long clavate basidia, and thin-walled, subglobose basidiospores (4.5 – 7 × 3.5 – 5 µm).	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
A46625D2849E52BFB4918C0D2FD5F4DF.taxon	etymology	Etymology. Bambusacearum (Lat.): refers to the species growing on bamboo.	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
A46625D2849E52BFB4918C0D2FD5F4DF.taxon	description	Description. Basidiomata annual, resupinate, ceraceous, up to 7 cm long, 2.4 cm wide, and 250 µm thick. Hymenophore smooth, cream to buff when fresh, buff to pale-yellow upon drying, cracked; margin cream, up to 1 mm. Hyphal system monomitic; generative hyphae bearing simple septa, colorless, thin-walled, moderately branched, 1.8 – 3.2 µm in diameter, IKI –, CB –; tissues unchanged in KOH. Subiculum composed of a basal layer and a medullary layer, basal layer with dense texture encrusted with crystals, medullary layer with dense texture, hymenial layer slightly thickening, subhymenium with fairly dense texture. Cystidia and cystidioles absent. Basidia long clavate, smooth, thin-walled, with four sterigmata and a base simple septum, 41 – 60 × 6 – 9 µm, basidioles dominant, in shape similar to basidia, but slightly smaller. Basidiospores subglobose, colorless, thin-walled, smooth, IKI –, CB –, (4) 4.5 – 7 × 3.5 – 5 µm, L = 6.03 µm, W = 4.47 µm, Q = 1.35 (n = 30 / 1).	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
31AE172B4C70592DB32187A124EB73E6.taxon	type_taxon	Type species. Corticium tuberculatum P. Karst.	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
31AE172B4C70592DB32187A124EB73E6.taxon	description	Description. Basidiomata resupinate, effused, membranous, soft-ceraceous, whitish or with yellowish, orange, or pale brownish tints, hymenium smooth, margin thinning out, abrupt, arachnoid or fimbriate, context white. Hyphal system monomitic, septa without clamps or with occasional clamps on subicular hyphae, subicular hyphae thin- to slightly thick-walled, mostly parallel and extending horizontally over the substrate, sometimes strongly covered by grainy crystals, subhymenium thickening, rather dense, hyphae thin-walled, growing vertically. Cystidia absent. Basidia clavate to narrowly clavate, with four sterigmata. Basidiospores narrowly ellipsoid to ellipsoid to subglobose, smooth, thin-walled, without reaction to Melzer’s or Cotton Blue (Larsson et al. 2025).	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
D3E82B0D665E57A8A09B409CFF6FB247.taxon	type_taxon	Type genus. Steccherinum Gray	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
D3E82B0D665E57A8A09B409CFF6FB247.taxon	description	Description. Basidiomata effused, effused-reflexed, or pileate, white or yellow to brown in various hues. Hymenial surface smooth, granular, aculeate, or poroid. context leathery to corky, whitish to pallid, more or less distinctly dimitic with skeletals. Hyphal system monomitic; generative hyphae branched, septate, or with clamp connections. Cystidia lacking or present, thin- to thick-walled. Basidia clavate or slightly multiform, 2 – 4 - spored. Basidiospores cylindrical, ellipsoid, or subglobose, smooth, colorless, IKI – (Maas Geesteranus 1971; Liu and Dai 2021; Du et al. 2022).	en	Deng, Yinglian, Chen, Meng, Wang, Kaisheng, Liu, Wanting, Chen, Daxiang, Yang, Shunqiang, Li, Wenli, Zhou, Hongmin, Zhao, Changlin (2025): Morphological and phylogenetic analyses reveal one new genus and six new species in Irpicaceae and Steccherinaceae (Polyporales, Basidiomycota) from the Yunnan – Guizhou Plateau, Asia. IMA Fungus 16: e 172367, DOI: 10.3897/imafungus.16.172367
