taxonID	type	description	language	source
03C7E33BFFBE292DFF3449EB81809B9C.taxon	etymology	Etymology: — The specific epithet ‘ bilobata ’ derived from Latin ‘ bi’ meaning “ two ”, and ‘ lobatus’, meaning “ having lobes ”, together referring to the two-lobed volva.	en	Chattopadhyay, Pinaki, Talukdar, Mousumi, Beypih, Jeswani, Tayung, Kumananda, Dutta, Arun Kumar (2022): A new species of Volvariella (Agaricales, Basidiomycota) from West Bengal, India. Phytotaxa 567 (1): 36-48, DOI: 10.11646/phytotaxa.567.1.3, URL: http://dx.doi.org/10.11646/phytotaxa.567.1.3
03C7E33BFFBE292DFF3449EB81809B9C.taxon	diagnosis	Diagnosis: — Differs from Volvariella volvacea by bilobed volva, smaller basidiospores (4.8 – 5.5 × 2.7 – 3.5 µm) and smaller sized basidium (20 – 23 × 5 – 7 µm).	en	Chattopadhyay, Pinaki, Talukdar, Mousumi, Beypih, Jeswani, Tayung, Kumananda, Dutta, Arun Kumar (2022): A new species of Volvariella (Agaricales, Basidiomycota) from West Bengal, India. Phytotaxa 567 (1): 36-48, DOI: 10.11646/phytotaxa.567.1.3, URL: http://dx.doi.org/10.11646/phytotaxa.567.1.3
03C7E33BFFBE292DFF3449EB81809B9C.taxon	materials_examined	Holotype: — INDIA. West Bengal: North- 24 - Parganas district, Barasat, Jagannathpur, near Kajibari bus stand, 22 ° 44 ’ 50.9 ” N, 88 ° 26 ’ 54.7 ” E, elev. 13.0 m, 21 August 2019, A. K. Dutta, AKD 54 / 2019 (GUBH 19922).	en	Chattopadhyay, Pinaki, Talukdar, Mousumi, Beypih, Jeswani, Tayung, Kumananda, Dutta, Arun Kumar (2022): A new species of Volvariella (Agaricales, Basidiomycota) from West Bengal, India. Phytotaxa 567 (1): 36-48, DOI: 10.11646/phytotaxa.567.1.3, URL: http://dx.doi.org/10.11646/phytotaxa.567.1.3
03C7E33BFFBE292DFF3449EB81809B9C.taxon	description	Description: — Pileus 45 – 70 mm diam., convex, surface greyish brown (6 E 3), non-hygrophanous, unchanging on bruising, silky fibrillose, margin translucent striate; context 3 – 4 mm thick at the center, cream, unchanging on bruising. Lamellae 3 – 4 mm broad, free, close to crowded with 1 – 2 series of lamellulae, greyish white (8 B 1) when young, becoming greyish orange (6 B 3) when old, concolorous, margin serrated. Stipe 45 – 60 × 4 – 10 mm, central, cylindrical, mostly equal, sometimes slightly tapering towards apex, surface greyish white (8 B 1), fibrillose; context white to cream, solid. Volva 25 – 40 × 15 – 30 mm, free from the stipe, bilobed saccate, fleshy, surface greyish brown (6 E 3) at the outer side and greyish white (8 B 1) at the inner side, slightly fibrillose. Odour fungus like. Taste not recorded. Basidiospores (4.8 –) 5.0 – 5.2 (– 5.5) × (2.7 –) 3.0 – 3.2 (– 3.5) µm [X mr = 5.08 – 5.13 × 3.18 – 3.28, X mm = 5.10 ± 0.17 × 3.22 ± 0.23 μm, Q mr = 1.57 – 1.60, Q mm = 1.59 ± 0.09, n = 28 basidiospores per 2 specimens], ellipsoid, often 1 – 2 guttate, thin- to slightly thick-walled, smooth. Basidia 20 – 23 × 5 – 7 µm, clavate, hyaline, thin-walled, 4 - spored, sterigmata ca. 2 µm long. Basidioles 14 – 18 × 3 – 6 μm, clavate, hyaline, thin-walled. Cheilocystidia 32 – 83 × 13 – 30 µm, crowded, clavate to ventricose lageniform, hyaline with KOH, thin-walled. Pleurocystidia 18.5 – 27.5 × 7 – 10 µm, abundant, variable in shape, ventricose acuminate to ventricose rostrate, broadly clavate to lageniform, hyaline with KOH, thinwalled. Lamellae trama hyphae 5 – 10 µm broad, hyaline with KOH, unbranched, thin-walled, often associated with oliferous hyphae, measuring 5 – 7 μm broad. Pileipellis a cutis-type, hyphae 8 – 18 µm broad, non-gelatinous, light brown with KOH, thin-walled. Pileus context hyphae 7.5 – 10 µm broad, often branched, hyaline with KOH, thinwalled. Stipitipellis a cutis-type, hyphae 63 – 175 × 20 – 38 µm, regular, cylindrical, hyaline to pale brown with KOH, unbranched, thin-walled. Stipe context hyphae 2.5 – 10 µm broad, regular, hyaline with KOH, unbranched, thin-walled. Volva composed of hyphae measuring 5 – 10 µm broad, closely packed, irregular, unbranched, light brown with KOH, thin-walled. Clamp-connection absent in all tissues.	en	Chattopadhyay, Pinaki, Talukdar, Mousumi, Beypih, Jeswani, Tayung, Kumananda, Dutta, Arun Kumar (2022): A new species of Volvariella (Agaricales, Basidiomycota) from West Bengal, India. Phytotaxa 567 (1): 36-48, DOI: 10.11646/phytotaxa.567.1.3, URL: http://dx.doi.org/10.11646/phytotaxa.567.1.3
03C7E33BFFBE292DFF3449EB81809B9C.taxon	biology_ecology	Ecology and distribution: — Solitary, scattered, on soil deposited in the base of a dicotyledonous tree. Known only from Eastern India.	en	Chattopadhyay, Pinaki, Talukdar, Mousumi, Beypih, Jeswani, Tayung, Kumananda, Dutta, Arun Kumar (2022): A new species of Volvariella (Agaricales, Basidiomycota) from West Bengal, India. Phytotaxa 567 (1): 36-48, DOI: 10.11646/phytotaxa.567.1.3, URL: http://dx.doi.org/10.11646/phytotaxa.567.1.3
03C7E33BFFBE292DFF3449EB81809B9C.taxon	materials_examined	Additional specimen examined: — INDIA. West Bengal: North- 24 - Parganas district, Barasat, Jagannathpur, near Kajibari bus stand, 22 ° 44 ’ 49.1 ” N, 88 ° 26 ’ 56.9 ” E, elev. 15.0 m, 23 August 2019, A. K. Dutta, AKD 82 / 2019 (CUH AM 778).	en	Chattopadhyay, Pinaki, Talukdar, Mousumi, Beypih, Jeswani, Tayung, Kumananda, Dutta, Arun Kumar (2022): A new species of Volvariella (Agaricales, Basidiomycota) from West Bengal, India. Phytotaxa 567 (1): 36-48, DOI: 10.11646/phytotaxa.567.1.3, URL: http://dx.doi.org/10.11646/phytotaxa.567.1.3
