taxonID	type	description	language	source
E376667BC6895DE795D9EF79C43A28CC.taxon	description	Figs 2 A, B, 3	en	Wang, Shi-en, Chen, Si-ang, Huang, Hai-chen, Lin, Dong-mei, Liu, Peng-hu (2025): Three new species of Agaricus (Agaricaceae, Agaricales) from southern China. MycoKeys 119: 47-66, DOI: 10.3897/mycokeys.119.154278
E376667BC6895DE795D9EF79C43A28CC.taxon	etymology	Etymology. aurantifibrillosus (Latin), referring to the pileus covered with arranged orange (5 A 8) or brownish yellow (5 C 8) fibrillose squamules.	en	Wang, Shi-en, Chen, Si-ang, Huang, Hai-chen, Lin, Dong-mei, Liu, Peng-hu (2025): Three new species of Agaricus (Agaricaceae, Agaricales) from southern China. MycoKeys 119: 47-66, DOI: 10.3897/mycokeys.119.154278
E376667BC6895DE795D9EF79C43A28CC.taxon	diagnosis	Diagnosis. This species is characterized by its pileus covered with orange (5 A 8) or brownish yellow (5 C 8) scattered fibrillose squamules, elongate basidiospores (Qav = 1.70), and abundant cheilocystidia.	en	Wang, Shi-en, Chen, Si-ang, Huang, Hai-chen, Lin, Dong-mei, Liu, Peng-hu (2025): Three new species of Agaricus (Agaricaceae, Agaricales) from southern China. MycoKeys 119: 47-66, DOI: 10.3897/mycokeys.119.154278
E376667BC6895DE795D9EF79C43A28CC.taxon	description	Description. Pileus 3.6 – 6.2 cm in diameter, 0.2 – 0.3 cm thick at the center, truncate conical to plane, surface dry, white (5 A 1) or orange white (5 A 2), covered with scattered arranged orange (5 A 8), brownish yellow (5 C 8) fibrillose squamules, denser at disc, showing brownish orange (6 C 8) or brown (6 E 8), margin appendiculate by annulus remnants. Context of the pileus white (6 A 1), with no special odor. Lamellae 0.2 – 0.4 cm broad, pastel red (9 A 4) then reddish brown (8 E 8) later brownish black (8 F 8), free, crowded, intercalated with numerous lamellulae. Stipe 5.6 – 8.6 × 0.4 – 1.3 cm, hollow, clavate, with white (6 A 1) rhizomorphs, provided with an annulus in its upper third, above the annulus white (6 A 1), below the annulus with white (6 A 1), orange (5 A 8) floccose squamules, becoming dark yellow (4 C 8) on touching or bruising. Annulus superior, white (6 A 1), simple, membranous, easy falling out. Basidiospores (4.6) 4.7 – 5.7 (5.9) × (2.7) 2.8 – 3.3 (3.6) μm, [Xav = 5.2 × 3.1 μm], Q = 1.50 – 1.93, Qav = 1.70, ellipsoid to elongate-ellipsoid, smooth, thick-walled, brown, guttulate. Basidia 14 – 18 × 5 – 7 μm, clavate, 4 (2) - spored, sterigmata 2 – 4 µm long. Cheilocystidia abundant, nearly globose, oblong, sphaeropedunculate, or broadly clavate, 12 – 34 × 10 – 20 μm, with pale yellowish intracellular pigment. Pleurocystidia absent. Pileipellis a cutis of cylindrical, slightly constricted at the septa, pale yellowish hyphae, 4 – 9 μm in diameter.	en	Wang, Shi-en, Chen, Si-ang, Huang, Hai-chen, Lin, Dong-mei, Liu, Peng-hu (2025): Three new species of Agaricus (Agaricaceae, Agaricales) from southern China. MycoKeys 119: 47-66, DOI: 10.3897/mycokeys.119.154278
5F9C3FAFFE6A578FA0225F090B7BFB5A.taxon	description	Figs 2 C, D, 4	en	Wang, Shi-en, Chen, Si-ang, Huang, Hai-chen, Lin, Dong-mei, Liu, Peng-hu (2025): Three new species of Agaricus (Agaricaceae, Agaricales) from southern China. MycoKeys 119: 47-66, DOI: 10.3897/mycokeys.119.154278
5F9C3FAFFE6A578FA0225F090B7BFB5A.taxon	etymology	Etymology. Derived from the acronym FAFU (Fujian Agriculture and Forestry University), where the type specimens of this species were collected.	en	Wang, Shi-en, Chen, Si-ang, Huang, Hai-chen, Lin, Dong-mei, Liu, Peng-hu (2025): Three new species of Agaricus (Agaricaceae, Agaricales) from southern China. MycoKeys 119: 47-66, DOI: 10.3897/mycokeys.119.154278
5F9C3FAFFE6A578FA0225F090B7BFB5A.taxon	diagnosis	Diagnosis. This species is characterized by its pileus and stipe covered with brown (7 D 5) or fox red (8 D 7) fibrils or fibrillose squamules, elongate basidiospores (Qav = 1.63), and abundant cheilocystidia.	en	Wang, Shi-en, Chen, Si-ang, Huang, Hai-chen, Lin, Dong-mei, Liu, Peng-hu (2025): Three new species of Agaricus (Agaricaceae, Agaricales) from southern China. MycoKeys 119: 47-66, DOI: 10.3897/mycokeys.119.154278
5F9C3FAFFE6A578FA0225F090B7BFB5A.taxon	description	Description. Pileus 3.4 – 5.5 cm in diameter, 0.2 – 0.4 cm thick at the center, truncate conical to plane, surface dry, white (5 A 1), brownish gray (7 C 2), covered with brown (7 D 5) or fox red (8 D 7) fibrils or with fibrillose squamules, concentrically arranged, denser and reddish brown (8 E 8) at disc, margin appendiculate by annulus remnants. Context of the pileus, white (6 A 1), with no special odor. Lamellae 0.2 – 0.3 cm broad, first pastel red (9 A 4), then reddish brown (8 E 8), later brownish black (8 F 8), free, crowded, intercalated with numerous lamellulae. Stipe 2.2 – 4.5 × 0.6 – 1.5 cm, nearly cylindrical, hollow, with white (6 A 1) rhizomorphs, provided with an annulus in its upper half, above the annulus white (6 A 1), below the annulus covered towards the base with concolorous squamules with the pileus surface. Annulus superior, white (6 A 1) to reddish brown (8 E 8), simple, membranous, persistent. Basidiospores (5.7) 6.0 – 7.9 (8.2) × (3.5) 3.7 – 5.0 (5.1) μm, [Xav = 6.8 × 4.2 μm], Q = 1.46 – 2.03, Qav = 1.63, ellipsoid to cylindrical, smooth, thick-walled, brown, guttulate. Basidia 17 – 25 × 6 – 9 μm, clavate, 4 (2) - spored, sterigmata 1 – 3 µm long. Cheilocystidia abundant, nearly globose, broadly clavate, or pyriform, 10 – 23 × 7 – 13 μm, hyaline. Pleurocystidia absent. Pileipellis a cutis of cylindrical, slightly constricted at septa, light brown hyphae, 6 – 12 μm wide.	en	Wang, Shi-en, Chen, Si-ang, Huang, Hai-chen, Lin, Dong-mei, Liu, Peng-hu (2025): Three new species of Agaricus (Agaricaceae, Agaricales) from southern China. MycoKeys 119: 47-66, DOI: 10.3897/mycokeys.119.154278
9957CD289E14588FA514BE678DB58C09.taxon	description	Figs 2 E, F, 5	en	Wang, Shi-en, Chen, Si-ang, Huang, Hai-chen, Lin, Dong-mei, Liu, Peng-hu (2025): Three new species of Agaricus (Agaricaceae, Agaricales) from southern China. MycoKeys 119: 47-66, DOI: 10.3897/mycokeys.119.154278
9957CD289E14588FA514BE678DB58C09.taxon	etymology	Etymology. shenzhenensis (Latin), meaning from shenzhen city where the holotype specimen was collected.	en	Wang, Shi-en, Chen, Si-ang, Huang, Hai-chen, Lin, Dong-mei, Liu, Peng-hu (2025): Three new species of Agaricus (Agaricaceae, Agaricales) from southern China. MycoKeys 119: 47-66, DOI: 10.3897/mycokeys.119.154278
9957CD289E14588FA514BE678DB58C09.taxon	diagnosis	Diagnosis. Distinguished by the pileus adorned with brownish gray (6 E 2) fibrillose squamules, context becoming yellow (3 B 8) on cutting, stipe base tapering and covered with brownish gray (6 E 2) fibrillose squamules, predominantly 2 - spored basidia.	en	Wang, Shi-en, Chen, Si-ang, Huang, Hai-chen, Lin, Dong-mei, Liu, Peng-hu (2025): Three new species of Agaricus (Agaricaceae, Agaricales) from southern China. MycoKeys 119: 47-66, DOI: 10.3897/mycokeys.119.154278
9957CD289E14588FA514BE678DB58C09.taxon	description	Description. Pileus 2.5 – 6.5 cm in diameter, 0.5 – 0.8 cm thick at the center, hemispherical, truncate conical to plane, applanate with a slightly depressed center when mature, surface dry, white (2 A 1), grayish white (2 B 1), entirely covered with appressed, concentrically arranged, triangular, brownish gray (6 E 2) fibrillose squamules, scattered towards the margin in age, denser taupe (4 F 1), black (2 F 1) at the disc, margin entire, appendiculate by annulus remnants. Context of the pileus white (6 A 1), becoming yellow (3 B 8) on cutting, odor unknown. Lamellae 0.5 – 0.7 cm broad, first pale red (9 A 3) then reddish brown (8 E 8), later brownish black (8 F 8), free, crowded, intercalated with numerous lamellulae. Stipe 4.5 – 11.5 × 0.5 – 2.0 cm, cylindrical, tapering downwards, hollow, with short white (6 A 1) rhizomorphs, provided with an annulus in its upper part, above the annulus white (6 A 1), below the annulus the upper half white and the lower half covered with dense adpressed brownish grey (6 E 2) squamules concolorous with the pileus surface. Annulus superior, white (6 A 1) to brownish black (8 F 8), simple, membranous, persistent. Basidiospores (5.8) 6.1 – 7.3 (7.5) × (3.8) 4.0 – 4.3 (4.4) μm, [Xav = 6.8 × 4.2 μm], Q = 1.41 – 1.87, Qav = 1.61, ellipsoid to elongate-ellipsoid, smooth, brown, thick-walled, guttulate. Basidia 25 – 33 × 8 – 10 μm, clavate, 2 (4) - spored, sterigmata 2 – 3 µm long. Cheilocystidia abundant, broadly clavate, oblong or pyriform, 22 – 50 × 10 – 22 μm. Pleurocystidia absent. Pileipellis a cutis of cylindrical, slightly constricted at the septa, light brown hyphae, 4 – 7 μm wide.	en	Wang, Shi-en, Chen, Si-ang, Huang, Hai-chen, Lin, Dong-mei, Liu, Peng-hu (2025): Three new species of Agaricus (Agaricaceae, Agaricales) from southern China. MycoKeys 119: 47-66, DOI: 10.3897/mycokeys.119.154278
