taxonID	type	description	language	source
AD4A6D0AFFB6FF86E0C68268267AF2D5.taxon	description	MycoBank: — MB 852897	en	Zhang, Yu-Xin, Mao, Ning, Li, Ting, Fan, Li (2024): Two new species of Infundibulicybe (Omphalinaceae, Agaricales) from northern China. Phytotaxa 649 (2): 193-210, DOI: 10.11646/phytotaxa.649.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.649.2.4
AD4A6D0AFFB6FF86E0C68268267AF2D5.taxon	diagnosis	Diagnosis: — Basidiomata small to medium; pileus 1.7 – 3.9 cm diam, infundibuliform; surface dry, smooth to finely felty, brownish flesh to pale brown, center and margin always much lighter, pale brown to cream; stipe cylindrical, coarser towards the base, hollow, surface with longitudinally fibrils, yellowish brown, base inflated with abundant white tomentum, and shorter basidiospores (5 –) 5.5 – 6.5 (– 7) × 3.5 – 4.5 μm.	en	Zhang, Yu-Xin, Mao, Ning, Li, Ting, Fan, Li (2024): Two new species of Infundibulicybe (Omphalinaceae, Agaricales) from northern China. Phytotaxa 649 (2): 193-210, DOI: 10.11646/phytotaxa.649.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.649.2.4
AD4A6D0AFFB6FF86E0C68268267AF2D5.taxon	etymology	Etymology: — confusa, refers to this species being confused with Infundibulicybe alkaliviolascens due to the appearance of the basidioma.	en	Zhang, Yu-Xin, Mao, Ning, Li, Ting, Fan, Li (2024): Two new species of Infundibulicybe (Omphalinaceae, Agaricales) from northern China. Phytotaxa 649 (2): 193-210, DOI: 10.11646/phytotaxa.649.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.649.2.4
AD4A6D0AFFB6FF86E0C68268267AF2D5.taxon	materials_examined	Holotype: — CHINA. Shanxi Province, Jiaocheng County, Guandi Mountain, Chailugou Village, on soil, in mixed forest of Larix gmelinii var. principis-rupprechtii and Picea asperata, elev. 1,600 m, 111 ° 24 ’ 2 ’’ E, 37 ° 47 ’ 25 ’’ N, 29 July 2020, H. Liu, J. Yang LH 970 (BJTC FM 1281).	en	Zhang, Yu-Xin, Mao, Ning, Li, Ting, Fan, Li (2024): Two new species of Infundibulicybe (Omphalinaceae, Agaricales) from northern China. Phytotaxa 649 (2): 193-210, DOI: 10.11646/phytotaxa.649.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.649.2.4
AD4A6D0AFFB6FF86E0C68268267AF2D5.taxon	description	Description: — Basidiomata small to medium, clitocyboid. Pileus 1.7 – 3.9 cm diam, infundibuliform; dry, smooth to finely felty, brownish flesh (# e 0 b 89 a) to pale brown (# c 19472), center and margin always much lighter, pale brown (# edceba) to cream (# d 8 d 0 bb), margin straight, sometimes slightly involute. Lamellae long-decurrent, white (# eef 0 e 8) to light cream (# f 1 f 0 de), moderately crowded, with lamellulae of 1 or 3 tiers, edges smooth and concolorous with faces. Stipe 2.5 – 3.9 × 0.6 – 1 cm, central, cylindrical, coarser towards the base, hollow, longitudinally fibrillose, concolorous with the pileus, base inflated with abundant white tomentum. 5 % KOH on the surface of the dried pileus produced no color change. Basidiospores (5 –) 5.5 – 6.5 (– 7) × 3.5 – 4.5 μm, Q = 1.4 – 1.6, Qm = 1.5 ± 0.1, ellipsoidal in face view, lacrymoid in lateral view, hyaline, smooth, inamyloid, cyanophilous, color not changed in KOH. Basidia 21 – 37.5 × 4 – 7 μm, clavate, hyaline, 4 - spored or 2 - spored, sterigmata 2 – 5 μm long. Cystidia absent. Lamellar trama regular; hyphae 3 – 8 µm wide, colorless, hyaline, cylindrical. Pileipellis a cutis composed of repent, cylindrical, subparallel, septate, thin-walled hyphae, with intracellular yellowish brown pigment 3 – 11 μm wide. Stipitipellis a cutis composed of subparallel cylindrical hyphae 5 – 8 μm wide. Clamp connections present in all parts of the basidiomata.	en	Zhang, Yu-Xin, Mao, Ning, Li, Ting, Fan, Li (2024): Two new species of Infundibulicybe (Omphalinaceae, Agaricales) from northern China. Phytotaxa 649 (2): 193-210, DOI: 10.11646/phytotaxa.649.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.649.2.4
AD4A6D0AFFB6FF86E0C68268267AF2D5.taxon	biology_ecology	Ecology and distribution: — associated with the mixed forest of Larix gmelinii var. principis-rupprechtii and Picea asperata, at elevation 1,600 m, only known from Shanxi Province, northern China.	en	Zhang, Yu-Xin, Mao, Ning, Li, Ting, Fan, Li (2024): Two new species of Infundibulicybe (Omphalinaceae, Agaricales) from northern China. Phytotaxa 649 (2): 193-210, DOI: 10.11646/phytotaxa.649.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.649.2.4
AD4A6D0AFFB6FF86E0C68268267AF2D5.taxon	materials_examined	Additional specimen examined: — CHINA. Shanxi Province, Jiaocheng County, Guandi Mountain, Chailugou Village, on soil, in mixed forest of Larix gmelinii var. principis-rupprechtii and Picea asperata, elev. 1,600 m, 111 ° 24 ’ 2 ’’ E, 37 ° 47 ’ 25 ’’ N, 29 July 2020, H. Liu, J. Yang LH 974 (BJTC FM 1285).	en	Zhang, Yu-Xin, Mao, Ning, Li, Ting, Fan, Li (2024): Two new species of Infundibulicybe (Omphalinaceae, Agaricales) from northern China. Phytotaxa 649 (2): 193-210, DOI: 10.11646/phytotaxa.649.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.649.2.4
AD4A6D0AFFB6FF86E0C68268267AF2D5.taxon	discussion	Notes: — In the ITS phylogenetic tree (Fig. 1), Infundibulicybe confusa and I. bresadolana are phylogenetically closely related to each other, but I. bresadolana has smooth basidiomata, more reddish colors, brownish gills in mature basidiomata, longer and narrower basidiospores (5.5 – 8.0 × 3.1 – 4 μm), which are usually lacrymoid, or ellipsoid to oblong, and usually grows on grasslands associated with Dryas sp. (Harmaja 1969). Morphologically, I. alkaliviolascens shares similarities with I. confusa in the yellowish brown basidiomata, but it can be differentiated from the latter by the violet to purplish pink reaction to KOH on the dried pileus, and long basidiospores (6 – 8.5 (9) × (3) 3.5 – 4.5 μm) (He & Yang 2023).	en	Zhang, Yu-Xin, Mao, Ning, Li, Ting, Fan, Li (2024): Two new species of Infundibulicybe (Omphalinaceae, Agaricales) from northern China. Phytotaxa 649 (2): 193-210, DOI: 10.11646/phytotaxa.649.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.649.2.4
AD4A6D0AFFB4FF80E0C687762488F1D1.taxon	description	MycoBank: — MB 852896	en	Zhang, Yu-Xin, Mao, Ning, Li, Ting, Fan, Li (2024): Two new species of Infundibulicybe (Omphalinaceae, Agaricales) from northern China. Phytotaxa 649 (2): 193-210, DOI: 10.11646/phytotaxa.649.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.649.2.4
AD4A6D0AFFB4FF80E0C687762488F1D1.taxon	diagnosis	Diagnosis: — Basidiomata small to medium; pileus 2.6 – 5.4 cm diam, infundibuliform, dry, smooth, brick red to reddish brown, stipe hollow, yellowish brown, surface with inconspicuous longitudinal fibrils; shorter basidiospores (6 –) 6.5 – 8 (– 8.5) × 4 – 6 μm and bigger basidia 25 – 40 × 6 – 7.5 μm.	en	Zhang, Yu-Xin, Mao, Ning, Li, Ting, Fan, Li (2024): Two new species of Infundibulicybe (Omphalinaceae, Agaricales) from northern China. Phytotaxa 649 (2): 193-210, DOI: 10.11646/phytotaxa.649.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.649.2.4
AD4A6D0AFFB4FF80E0C687762488F1D1.taxon	etymology	Etymology: — phaeocentralis, refers to the darker center of the pileus.	en	Zhang, Yu-Xin, Mao, Ning, Li, Ting, Fan, Li (2024): Two new species of Infundibulicybe (Omphalinaceae, Agaricales) from northern China. Phytotaxa 649 (2): 193-210, DOI: 10.11646/phytotaxa.649.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.649.2.4
AD4A6D0AFFB4FF80E0C687762488F1D1.taxon	materials_examined	Holotype: — CHINA. Shanxi Province, Guancen Mountain, on soil, in mixed forest of Larix gmelinii var. principis-rupprechtii and Picea asperata, 2 September 2022, J. Z. Cao CF 1197 (BJTC FM 2899).	en	Zhang, Yu-Xin, Mao, Ning, Li, Ting, Fan, Li (2024): Two new species of Infundibulicybe (Omphalinaceae, Agaricales) from northern China. Phytotaxa 649 (2): 193-210, DOI: 10.11646/phytotaxa.649.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.649.2.4
AD4A6D0AFFB4FF80E0C687762488F1D1.taxon	description	Description: — Basidiomata small to medium, clitocyboid. Pileus 2.6 – 5.4 cm diam, infundibuliform; dry, smooth, glabrous, brick red (# c 2847 a) to reddish brown (# 8 c 564 a), center and margin always darker, deep reddish brown (# 67393 b), margin straight. Lamellae long-decurrent, yellowish white (# f 2 f 6 b 6) to deep cream (# d 2 b 86 b), moderately crowded, with 1 to 4 tiers of lamellulae, edges smooth and concolorous with faces. Stipe 3.7 – 5.7 × 0.6 – 0.9 cm, centrally attached, cylindrical, coarser towards the base, hollow, surface with inconspicuous longitudinal fibrils, yellowish brown (# a 97 e 3 d), base inflated with abundant white tomentum. 5 % KOH on the surface of the dried pileus produced no color change. Basidiospores (6 –) 6.5 – 8 (– 8.5) × 4 – 6 μm, Q = (1.2) 1.3 – 1.6 (1.8), Qm = 1.4 ± 0.1, ellipsoidal to broadly ellipsoidal in face view, lacrymoid in lateral view, hyaline, smooth, inamyloid, cyanophilous, color not changing in KOH. Basidia 25 – 40 × 6 – 7.5 μm, clavate, hyaline, usually 4 - spored, sometimes 2 - spored, sterigmata 2.5 – 5 μm long. Cystidia absent. Lamellar trama regular; hyphae 4 – 10 µm wide, colorless, hyaline, cylindrical. Pileipellis a cutis composed of repent, cylindrical, subparallel, septate, thin-walled hyphae containing yellowish brown pigment 4.5 – 11.5 μm diam. Stipitipellis a cutis composed of subparallel cylindrical hyphae 4 – 10 μm diam. Clamp connections present in all parts of the basidiomata.	en	Zhang, Yu-Xin, Mao, Ning, Li, Ting, Fan, Li (2024): Two new species of Infundibulicybe (Omphalinaceae, Agaricales) from northern China. Phytotaxa 649 (2): 193-210, DOI: 10.11646/phytotaxa.649.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.649.2.4
AD4A6D0AFFB4FF80E0C687762488F1D1.taxon	biology_ecology	Ecology and distribution: — on soil of a mixed forest of Larix gmelinii var. principis-rupprechtii and Picea asperata, only known from Shanxi Province, northern China.	en	Zhang, Yu-Xin, Mao, Ning, Li, Ting, Fan, Li (2024): Two new species of Infundibulicybe (Omphalinaceae, Agaricales) from northern China. Phytotaxa 649 (2): 193-210, DOI: 10.11646/phytotaxa.649.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.649.2.4
AD4A6D0AFFB4FF80E0C687762488F1D1.taxon	materials_examined	Additional specimens examined: — CHINA. Shanxi Province, Ningwu County, Guancen Mountain, on soil, in mixed forest of Larix gmelinii var. principis-rupprechtii and Picea asperata, 14 August 2017, H. Liu 1 - LH 170731 (BJTC FM 402); CHINA. Shanxi Province, Ningwu County, on soil, in mixed forest of Larix gmelinii var. principis-rupprechtii and Picea asperata, 5 July 2022, H. Liu LH 1563 (BJTC FM 2067); CHINA. Shanxi Province, Ningwu County, Luya Mountain, elev. 2,293 m, 111 ° 58 ’ 17 ’’ E, 38 ° 47 ’ 58 ’’ N, 16 August 2023, H. Y. Fu, H. M. Ji MS 270 (BJTC FM 3215).	en	Zhang, Yu-Xin, Mao, Ning, Li, Ting, Fan, Li (2024): Two new species of Infundibulicybe (Omphalinaceae, Agaricales) from northern China. Phytotaxa 649 (2): 193-210, DOI: 10.11646/phytotaxa.649.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.649.2.4
AD4A6D0AFFB4FF80E0C687762488F1D1.taxon	discussion	Notes: — Infundibulicybe phaeocentralis formed an isolated position in our phylogenetic trees (Figs. 1, 2), which strongly supported its uniqueness. The new species is very similar to the samples of I. rufa that are also characterised by a red-brown cap (Zhao et al. 2016). We also recognized the occurrence of I. rufa in the northern region of Shanxi Province in this study. However, most of the Shanxi samples of I. rufa supported by our molecular analysis clearly lack the red-brown in the cap, and are, instead, brown or yellow-brown, and sometimes a shade of purple-brown (Fig. 6, k). Thus, both of the two species are easily separated from each other by the color of the basidiomata in the area of Shanxi Province. Infundibulicybe squamulosa, originally described from Europe, and confirmed from China before this study (He & Yang 2023), is another species similar to Infundibulicybe phaeocentralis in morphology, and this species is also distributed in Shanxi Province (Fig. 6, l – m). Actually, the two species are impossible to separate from each other by morphology alone based on the examination of the Shanxi samples in this study. However, I. squamulosa has been recorded only in the forest of pure Pinus tabuliformis in the lowland area in Shanxi Province, whereas I. phaeocentralis is exclusively found in the mixed forest of Picea sp. and Larix sp. in alpine or subalpine regions in this province. Infundibulicybe bispora and I. gibba are phylogenetically related to I. phaeocentralis according to the multilocus phylogeny (Fig. 2). Morphologically, Infundibulicybe bispora can be distinguished from I. phaeocentralis by its white lamellae, mostly 2 - spored basidia, longer sterigmata (4 – 10 μm) and longer basidiospores (6 – 11.5 × 4 – 6 μm) (He & Yang 2023). I. gibba is differentiated by its tan, pinkish tan, or flesh-colored pileus, whitish, off-white, or very pale stipe and smaller basidiospores (5 – 9 × 3.5 – 6 μm) (Harmaja 2003).	en	Zhang, Yu-Xin, Mao, Ning, Li, Ting, Fan, Li (2024): Two new species of Infundibulicybe (Omphalinaceae, Agaricales) from northern China. Phytotaxa 649 (2): 193-210, DOI: 10.11646/phytotaxa.649.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.649.2.4
