taxonID	type	description	language	source
BB4C6E2BFFA4FFCDFF00F98E0387CF10.taxon	etymology	Etymology: — “ fense ” means pinkish, pale rose in Chinese, and refers to the color of the lamellae. Diagnosis: — Belonging to Amanita section Caesareae, characterized by a buff to cacao brown pileus; a narrow subhymenium (2 – 3 cells thick); pinkish white to light pink lamellae; membranous annulus; ellipsoid to elongate and inamyloid basidiospores (11.5 – 14.0 × 8.0 – 10.0 µm with Q = 1.38 – 1.63 and Q m = 1.52 ± 0.09); abundant clamps. Holotype: — CHINA. YUNNAN PROVINCE: Yongsheng County, 26 ° 40 ′ 23 ” N, 100 ° 43 ′ 19 ” E, elev. 2655 m, 2 nd October 2018, H. Y. Huang 174 (MHKMU-Huang 174). Gene sequences ex-holotype: — MT 108790 (ITS); MT 138689 (LSU). Description: — Basidiomata medium-sized, mostly solitary. Pileus 5 – 8 cm in diam, plano-convex to applanate, shiny, slightly viscid when moist, surface buff to cacao brown (5 C 3 – 5, 5 D 4 – 6, 6 C 6) when young, then golden brown (5 D 5 – 7, 6 D 6) to bronze brown (5 E 5 – 8, 6 E 5 – 6), dark at the center, covered with pearl white (3 B 1) or grayish white (29 B 1, 30 B 1) cottony-floccose scales, paler towards the margin when old; margin striate 0.3 – 0.4 R (or 30 – 40 % of the radius); trama pale white, thin. Lamellae 0.5 – 0.9 cm broad, free, pinkish white, pale pink or shell pink (8 A 2 – 3, 9 A 2, 10 A 2), the pink tones becoming more obvious after drying, unchanging when injured, moderately crowded, 70 – 80 complete lamellae / cap, 1 – 2 lamellulae between two complete lamellae, lamellulae subtruncate to truncate. Stipe 7 – 10 cm long × 0.7 – 1.1 cm diam, surface white (1 A 1) with faint pink hues, cylindrical, attenuated upwards, hollow in center, context pinkish white or pale pink (9 A 2, 10 A 2). Basal bulb absent. Volval remnants on the stipe base saccate 2.0 – 2.8 × 1.4 – 1.8 cm diam, soft, white, off-white (1 A 1) to pinkish white (9 A 2, 10 A 2). Annulus persistent, upper-middle, thin, small, membranous, fragile and easily detached, estriate, white. Odor indistinct. Basidiospores [80 / 4 / 4] (11.0 –) 11.5 – 14.0 (– 14.5) × (7.5 –) 8.0 – 10.0 (– 10.5) µm, Q = (1.33 –) 1.38 – 1.63 (– 1.67), Q m = 1.52 ± 0.09, ellipsoid to elongate, inamyloid, thin-walled, hyaline, smooth; apiculus small about 1 µm long. Basidia 40 – 49 × 12 – 14 µm, clavate, 4 - spored; sterigmata 4 – 6 µm long, basal septa clamped. Lamellar trama bilateral. Mediostratum 30 – 40 µm thick, composed of filamentous hyphae and ellipsoid to subfusiform inflated cells. Lateral stratum consisting of abundant ellipsoid to elongate ellipsoid inflated cells and scattered thin-walled regular hyphae, 3 – 7 µm wide. Subhymenium 28 – 40 µm thick, with 2 – 3 layers of pyriform inflated cells, 10 – 22 × 7 – 18 µm. Lamellar edge somewhat gelatinized, composed of hyaline, numerous subglobose, clavate or pyriform inflated cells 20 – 40 × 10 – 20 µm and 3 – 5 µm wide filamentous hyphae, single or in short chains, running parallel to the lamellar edge. Pileipellis 30 – 80 µm thick; upper layer 20 – 40 µm thick, slightly gelatinized, filamentous hyphae 1 – 4 µm wide, hyaline, radially arranged; lower layer 15 – 40 µm thick of filamentous hyphae 2 – 8 µm wide, colorless, radial or interwoven, compact. Pileus context made up of abundant thin-walled inflated cells, 45 – 90 × 20 − 40 µm; mixed with filamentous hyphae 3 – 5 µm diam, thick-walled (about 1 – 1.5 µm thick), clamped. Volval remnants on the stipe base dominantly composed of abundant longitudinally arranged 3 – 7 µm wide, colorless, thin-walled filamentous hyphae; scattered to fairly abundant inflated cells, subglobose to ellipsoid, 40 – 90 × 25 – 55 µm, colorless, thin-walled. But inflated cells of the outer layer of the volval remnants more abundant than the inner layers. Stipe trama mainly composed of longitudinally arranged, long, clavate, 90 – 200 × 25 – 45 µm terminal cells and 2 – 10 µm wide filamentous hyphae. Annulus consisting mainly of radially arranged hyphae, 2.5 – 7 µm wide, colorless, thin or slightly thick-walled; inflated cells scarce, ellipsoid to elongate, clavate to broad clavate, 20 – 40 × 9 – 15 µm, colorless, thin-walled, often single and terminal. Clamps present in all tissues of basidiomata. Known distribution and habitat: — CHINA. Anhui, Liaoning, Yunnan province. Solitary to gregarious on soil in needle woods of P. armandii, P. yunnanensis or mixed forests dominated by Q. fabri, Rhododendron sp. and P. yunnanensis, elev. 2200 – 2269 m, July to October. Other specimens examined: — CHINA. ANHUI PROVINCE: Jinzhai County, elev. 939 m, 19 th July 2017, Y. J. Hao 1432 (HKAS 100579) [GenBank Acc. No.: MH 508293 (ITS); MH 486432 (LSU)]; Same location, elev. unknown, 25 th July 2017, Y. J. Hao 1570, (HKAS 100633) [GenBank Acc. No.: MH 486433 (ITS); MH 508294 (LSU)]; LIAONING PROVINCE: Huanren County, elev. 397 m, 26 th August 2015, Q. Cai 1429, (HKAS 92048) [GenBank Acc. No.: MH 508296 (ITS); MH 486435 (LSU)]. Benxi City, elev. unknown, Collector unknown (HKAS 92007) [GenBank Acc. No.: MH 508295 (ITS); MH 486434 (LSU)]. YUNNAN PROVINCE: Heqing County, Xiqiao Town, 26 ° 18 ′ 09 ” N, 100 ° 10 ′ 41 ” E, elev. 2250 m, 24 th September 2015, L. P. Tang 2269 (MHKMU-Tang 2269) [GenBank Acc. No.: MT 108789 (ITS); MT 138688 (LSU)]; Shizong County, Junzi Mountain, 24 ° 38 ′ 39 ″ N, 104 ° 9 ′ 12 ″ E, elev. 2304 m, 8 th August 2019, Y. J. Pu 050 (MHKMU-Pu 050) [GenBank Acc. No.: MT 108791 (ITS); MT 138690 (LSU)]; Wuding County, Shizi Mountain, elev. 2200 m, 3 rd October 2011, L. P. Tang 1565 (MHKMU-Tang 1565) [GenBank Acc. No.: MT 108788 (ITS); MT 138687 (LSU)]; Yulong County, Yufeng Mountain, Z. L. Yang s. n. (HKAS 29519) [GenBank Acc. No.: AF 024459 (LSU)].	en	Mu, Man, Huang, Hong-Yan, Zhang, Wen-Hao, Tang, Li-Ping (2021): A new species with pink lamellae of Amanita section Caesareae from China. Phytotaxa 478 (1): 141-150, DOI: 10.11646/phytotaxa.478.1.10, URL: http://dx.doi.org/10.11646/phytotaxa.478.1.10
