taxonID	type	description	language	source
775542669CC0521F81964D750A7001C1.taxon	description	Figs 2, 3	en	Zhu, An-Hong, Xu, Yan-Ru, Ma, Hai-Xia, Yu, Wen-Jie (2025): Three nodulose-spored Inocybe (Agaricales, Basidiomycota) species discovered from Motuo, Southwest China. MycoKeys 122: 99-121, DOI: 10.3897/mycokeys.122.163942
775542669CC0521F81964D750A7001C1.taxon	etymology	Etymology. Refer to the distinctive yellow and densely hairy (tomentose) surface of the mushroom’s pileus.	en	Zhu, An-Hong, Xu, Yan-Ru, Ma, Hai-Xia, Yu, Wen-Jie (2025): Three nodulose-spored Inocybe (Agaricales, Basidiomycota) species discovered from Motuo, Southwest China. MycoKeys 122: 99-121, DOI: 10.3897/mycokeys.122.163942
775542669CC0521F81964D750A7001C1.taxon	diagnosis	Diagnosis. Inocybe flavitomentosa is characterized by small to medium-sized basidiomata with yellowish white to pale yellow coloration, a subtomentose pileus surface, crowded lamellae, a slender entirely pruinose stipe, angular-nodulose basidiospores bearing faint apical knobs, and abundant lageniform to fusiform hymenial cystidia. While morphologically similar to I. paludinelloides, it differs from it by its smaller basidiospores with less pronounced knobs, smaller hymenial cystidia, and an ecology in tropical broad-leaved forests.	en	Zhu, An-Hong, Xu, Yan-Ru, Ma, Hai-Xia, Yu, Wen-Jie (2025): Three nodulose-spored Inocybe (Agaricales, Basidiomycota) species discovered from Motuo, Southwest China. MycoKeys 122: 99-121, DOI: 10.3897/mycokeys.122.163942
775542669CC0521F81964D750A7001C1.taxon	description	Description. Basidiomata: Small to medium-sized. Pileus 18 – 24 mm diam., hemispherical with decurved margin when young, becoming campanulate to parabolic, eventually broadly convex with a depressed to straight margin at maturity; surface dry, fibrillose to fibrillose-rimulose, finely subtomentose near margin; margin often splitting or strongly crenulate with age; coloration yellowish white (1 A 2) to pale yellow (2 A 2) or grayish white (2 A 1), darker toward the disc. Lamellae adnexed, crowded, alternating with 3 – 4 tiers of lamellulae, 0.8 – 1.5 mm wide; initially whitish yellow (1 A 2), maturing to pale yellow (2 A 3); edges entire to finely crenulate. Stipe 45 – 60 × 2.3 – 3.8 mm, central, solid, slightly swollen at apex and base; surface entirely white-pruinose (1 A 1), longitudinally striate, yellowish (2 B 3) to yellowish white (2 A 2). Context fleshy in pileus (0.5 mm thick at mid-radius, up to 2 mm under umbo), white (1 A 1); stipe context fibrous, yellowish white (2 A 2). Odor not recorded. Basidiospores [n = 100 / 2 / 2] (6.3 –) 6.5 – 7.8 (– 8.1) × (4.3 –) 4.6 – 5.8 (– 6.0) μm, Q = (1.18 –) 1.20 – 1.65 (Q m = 1.39 ± 0.09), angular-nodulose with 8 – 11 low nodules, pale yellowish to yellowish brown in 5 % KOH; apiculus indistinct; occasionally containing 1 circular to oblong oil droplet. Basidia 15 – 30 × 4 – 8 μm, clavate to narrowly clavate or subcylindrical, predominantly 4 - spored (rarely 2 - or 3 - spored). Pleurocystidia (n = 40) 48 – 73 × 12 – 21 μm, lageniform to fusiform or sublageniform, occasionally cylindrical; apices crystalliferous, obtuse; walls thick (up to 2.5 μm), colorless to pale yellow; abundant. Cheilocystidia (n = 40) 38 – 60 × 12 – 18 μm, morphologically similar to pleurocystidia but predominantly fusiform; walls <3 μm thick. Cheiloparacystidia 10 – 20 × 4 – 8 μm, clavate to elliptical, thin-walled. Caulocystidia (n = 30) 35 – 74 × 7 – 14 μm, fusiform to lageniform or cylindrical, thick-walled (up to 3 μm), descending entire stipe. Cauloparacystidia 15 – 23 × 3 – 9 μm, clavate, thin-walled. Hymenophoral trama subregular, 40 – 75 μm thick; hyphae 3 – 12 μm wide, thin-walled. Pileipellis two-layered: upper layer (72 – 125 μm thick) of interwoven, rough, thin-walled hyphae (2 – 5 μm); lower layer of yellow to yellowish brown, subinflated hyphae (7 – 14 μm). Stipitipellis a cutis of pale-yellow cylindrical hyphae (2 – 5 μm). Oleiferous hyphae present in stipe trama (2 – 6 μm). Clamp connections ubiquitous.	en	Zhu, An-Hong, Xu, Yan-Ru, Ma, Hai-Xia, Yu, Wen-Jie (2025): Three nodulose-spored Inocybe (Agaricales, Basidiomycota) species discovered from Motuo, Southwest China. MycoKeys 122: 99-121, DOI: 10.3897/mycokeys.122.163942
43F5B22C94595FB9B6C0D35CA9F9F090.taxon	description	Figs 4, 5	en	Zhu, An-Hong, Xu, Yan-Ru, Ma, Hai-Xia, Yu, Wen-Jie (2025): Three nodulose-spored Inocybe (Agaricales, Basidiomycota) species discovered from Motuo, Southwest China. MycoKeys 122: 99-121, DOI: 10.3897/mycokeys.122.163942
43F5B22C94595FB9B6C0D35CA9F9F090.taxon	etymology	Etymology. Named after Motuo County, the type locality in Xizang Autonomous Region, China.	en	Zhu, An-Hong, Xu, Yan-Ru, Ma, Hai-Xia, Yu, Wen-Jie (2025): Three nodulose-spored Inocybe (Agaricales, Basidiomycota) species discovered from Motuo, Southwest China. MycoKeys 122: 99-121, DOI: 10.3897/mycokeys.122.163942
43F5B22C94595FB9B6C0D35CA9F9F090.taxon	diagnosis	Diagnosis. Basidiomata small, Pileus yellowish brown with pallid margins; lamellae subcrowded; stipe glabrous, cylindrical, with a swollen base. Basidiospores nodulose with 7 – 11 distinct blunt nodules; hymenial cystidia fusiform with a tapered base and usually forming a pedicel, walls slightly thickened, yellowish, Caulocystidia absent. Occurs in broad-leaved forests in tropical Xizang, China. Most similar to I. humilis, but differs from it by the larger basidiospores with more pronounced nodules, mostly fusiform hymenial cystidia with thinner walls (1 – 1.5 µm thick), the lack of caulocystidia, and an ecology in tropical forest.	en	Zhu, An-Hong, Xu, Yan-Ru, Ma, Hai-Xia, Yu, Wen-Jie (2025): Three nodulose-spored Inocybe (Agaricales, Basidiomycota) species discovered from Motuo, Southwest China. MycoKeys 122: 99-121, DOI: 10.3897/mycokeys.122.163942
43F5B22C94595FB9B6C0D35CA9F9F090.taxon	description	Description. Basidioma small. Pileus 12 – 15 mm in diameter, campanulate to nearly conical when young, becoming plano-convex at maturity, with a distinct umbo at the center; margin even, spreading; surface dry, radially fibrillose with fine cracks to splitting, nearly smooth, sometimes with slightly raised small scales; center of the pileus brown (5 B 4) to umber brown (5 C 7), gradually fading towards the margin, mostly light brown (5 B 3) to pale yellowish-brown (6 D 5), margin pale yellow (1 A 3). Lamellae adnexed, subcrowded, 0.8 – 1.3 mm wide, unequal in length, with 3 – 4 tiers of lamellulae, edge faintly serrate; white (1 A 1) when young, becoming grayish-white (1 B 2), and at maturity pale yellow (1 A 3) to yellowish-brown (4 B 6). Stipe 20 – 30 mm long, 1.6 – 2.3 mm thick, cylindrical, solid; base swollen but non-marginate, up to 2.6 mm thick; glabrous throughout, covered with whitish (1 A 1) tomentose hyphae at the base; pale yellow (1 A 3), pale pinkish-brown (6 C 4) to yellowish-brown (6 E 7). Context of the pileus fleshy, brownish (5 B 3) near the surface, otherwise white (1 A 1); stipe context fibrous, brownish (6 E 5). Odor faintly salty. Spores [100 / 2 / 2] (8.1) 8.2 – 9.8 – 11.3 (12.1) × (6.5) 6.7 – 8.2 – 9.3 (10.1) µm, Q = (1.04) 1.06 – 1.20 – 1.40 (1.51), Qm ± Sd = 1.20 ± 0.1040, verrucose, with 7 – 11 distinct warts, yellow to yellowish-brown in 5 % KOH. Basidia 27 – 38 × 8 – 15 µm, subcylindrical to clavate, bearing 2 – 4 sterigmata, sterigmata 4 – 9 µm long, occasionally up to 13 µm, thin-walled, hyaline, with internal oil droplets, sometimes translucent. Pleurocystidia 51 – 59 – 68 × 15.5 – 19.4 – 24 µm (n = 30), mostly fusiform, broadly fusiform, or narrowly fusiform, occasionally sublageniform, apex mostly obtuse, sometimes subcapitate, often encrusted, constricted at the base to form a short stalk, thick-walled, 1 – 1.5 µm thick towards the middle, with walls gradually thickening from the base upwards, thickest at the apex (up to 2 – 3 µm), walls distinctly yellow, mostly hyaline and lacking contents, occasionally with pale yellowish internal contents. Cheilocystidia 31 – 38 – 46 × 17.5 – 19.4 – 22 µm (n = 30), similar to pleurocystidia, fusiform to narrowly fusiform, with thick walls up to 2 – 3 µm at the apex, walls distinctly yellow. Cheiloparacystidia 20 – 28 × 8 – 13 µm, abundant, broadly clavate to obovate, thin-walled, hyaline, translucent. Hymenophoral trama 38 – 54 µm thick, subregular, composed of cylindrical to broadly cylindrical hyphae, cylindrical hyphae 5 – 7 µm wide, broadly cylindrical hyphae 13 – 25 µm wide. Pileipellis an epithelium, 30 – 60 µm thick, brown to brownish, composed of elongated cylindrical hyphae, 4 – 10 µm wide, thin-walled, surface rough, pale yellow. Pileus trama subregular, composed of inflated hyphae, 15 – 24 µm in diameter, relatively smooth, thin-walled, hyaline, and colorless. Stipitipellis composed of elongated cylindrical hyphae, 3 – 10 µm in diameter, pale yellow, mostly smooth, occasionally rough. Stipe trama hyaline, composed of narrow cylindrical and broadly cylindrical hyphae, narrow cylindrical hyphae 3 – 7 µm wide, broadly cylindrical hyphae 10 – 20 µm wide, thin-walled, smooth, and colorless. Oleiferous hyphae commonly observed in the stipe and pileipellis, 4 – 13 µm wide, smooth-surfaced, with protruding nodules, pale yellow to yellow. Clamp connections present in all parts of the basidioma.	en	Zhu, An-Hong, Xu, Yan-Ru, Ma, Hai-Xia, Yu, Wen-Jie (2025): Three nodulose-spored Inocybe (Agaricales, Basidiomycota) species discovered from Motuo, Southwest China. MycoKeys 122: 99-121, DOI: 10.3897/mycokeys.122.163942
1DD21E8234CC561FBFFDAE1F8E466665.taxon	description	Figs 6, 7	en	Zhu, An-Hong, Xu, Yan-Ru, Ma, Hai-Xia, Yu, Wen-Jie (2025): Three nodulose-spored Inocybe (Agaricales, Basidiomycota) species discovered from Motuo, Southwest China. MycoKeys 122: 99-121, DOI: 10.3897/mycokeys.122.163942
1DD21E8234CC561FBFFDAE1F8E466665.taxon	etymology	Etymology. Refers to the basidiospore morphology which is similar to I. chondrospora.	en	Zhu, An-Hong, Xu, Yan-Ru, Ma, Hai-Xia, Yu, Wen-Jie (2025): Three nodulose-spored Inocybe (Agaricales, Basidiomycota) species discovered from Motuo, Southwest China. MycoKeys 122: 99-121, DOI: 10.3897/mycokeys.122.163942
1DD21E8234CC561FBFFDAE1F8E466665.taxon	diagnosis	Diagnosis. Basidiomata small, Pileus brown to reddish brown; lamellae subcrowded; stipe cylindrical with a swollen base, brown to reddish brown, entirely pruinose. Basidiospores oblong-ellipsoid to phaseoliform, regular; hymenial cystidia broadly fusiform with a tapered base and usually forming a short pedicel, walls thickened, yellow, Caulocystidia descending to stipe base. Occurs in broad-leaved forests in tropical Xizang, China. Most similar to I. chondrospora, but differs from it by an appressed-fibrillose to nearly glabrous pileus, smaller basidiospores, broader hymenial cystidia, and an ecology in subtropical evergreen forests.	en	Zhu, An-Hong, Xu, Yan-Ru, Ma, Hai-Xia, Yu, Wen-Jie (2025): Three nodulose-spored Inocybe (Agaricales, Basidiomycota) species discovered from Motuo, Southwest China. MycoKeys 122: 99-121, DOI: 10.3897/mycokeys.122.163942
1DD21E8234CC561FBFFDAE1F8E466665.taxon	description	Description. Basidiomata small-sized. Pileus 15 – 20 mm diam., initially hemispherical to subglobose, becoming convex to plano-convex with age, developing a low obtuse umbo at maturity; margin persistently incurved in young specimens, decurved in age; surface dry, matte, radially striate near margin; disc umber (7 B 6) to chestnut brown (6 E 4), gradually fading to yellowish brown (5 A 5 – 6 A 6) towards margin. Lamellae adnexed, close, with 3 – 4 tiers of lamellulae; lamellar face brownish yellow (5 D 6) when dry, developing sparse dark brown (5 E 4) maculations; edges fimbriate, concolorous with faces. Stipe 15 – 19 × 2 – 3 mm, eccentric, terete, solid; surface densely white-pruinose (1 A 1) at apex, becoming fibrillose-striate downwards; apex strong brown (6 E 7) with punctate protrusions, gradually transitioning to brown (6 B 6) at base. Context fleshy in pileus, 2 – 3 mm thick at dis, fibrillose in stipe; yellowish white overall, developing brownish tones near stipe base. Odor not distinctive. Basidiospores [100 / 2 / 2] (holotype) mostly ellipsoid to oblong-ellipsoid, (9.5) 10.1 – 11.4 – 12.9 (13.4) × (5.9) 6.0 – 6.6 – 7.2 (8.1) μm, Q = (1.3) 1.5 – 1.7 – 1.9 (2.0), Q m ± SD = 1.73 ± 0.134; less often phaseoliform, 9.5 – 10.9 – 11.9 × 5.9 – 6.5 – 8.1 μm; smooth, yellow-greenish in KOH, containing 1 – 2 yellowish refractive oil droplets. Basidia 14 – 18 – 22 × 6 – 7 – 9 μm (n = 30), predominantly clavate to cylindrical, 4 - sterigmate (occasionally 2 - sterigmate); sterigmata 2 – 8 μm long; contents yellowish with granular inclusions. Pleurocystidia 41 – 49 – 59 × 17 – 21 – 27 μm (n = 30), fusoid-ventricose with broad basal pedicels (3 – 5 μm wide), walls thickened apically (2 – 4 μm), yellow-green in KOH. Cheilocystidia 40 – 46 – 60 × 11 – 22 – 25 μm (n = 30), morphologically similar to pleurocystidia. Cheiloparacystidia 9 – 14 – 20 × 8 – 11 – 15 μm (n = 30), clavate, thin-walled, hyaline. Hymenophoral trama regular, 38 – 72 μm wide; hyphae cylindrical to inflated (7 – 30 μm diam.), thin-walled, yellowish. Pileipellis 48 – 130 μm thick, cutis-type; hyphae parallel, 7 – 24 μm diam., walls yellowish brown with encrusted pigments. Stipe trama composed of parallel, cylindrical hyphae 6 – 14 μm diam. Caulocystidia 38 – 42 – 47 × 14 – 17 – 20 μm (n = 30), fusoid, thick-walled (2 – 3 μm), concentrated at stipe apex. Oleiferous hyphae present in all tissues, 3 – 12 μm diam., bright yellow, irregularly contorted. Clamp connections abundant throughout all tissues.	en	Zhu, An-Hong, Xu, Yan-Ru, Ma, Hai-Xia, Yu, Wen-Jie (2025): Three nodulose-spored Inocybe (Agaricales, Basidiomycota) species discovered from Motuo, Southwest China. MycoKeys 122: 99-121, DOI: 10.3897/mycokeys.122.163942
