Volvariella pulla E. F. Malysheva &amp; A. V. Alexandrova, Phytotaxa
Creators: name: Niego, Allen Grace T.
name: Sysouphanthong, Phongeun
name: Thongklang, Naritsada
name: Hyde, Kevin D.
name: Phonemany, Monthien
name: Phookamsak, Rungtiwa
name: Raspé, Olivier
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Agaricomycetes
Agaricales
Pluteaceae
Volvariella
Volvariella pulla

description: <i>Volvariella pulla</i> E.F. Malysheva &amp; A.V. Alexandrova, <i>Phytotaxa</i> 408 (4): 247 (2019) (Figures 4 &amp; 5) MycoBank MB 831060, Faces of Fungi 08024 Description:— <i>Basidiome</i> large. <i>Pileus</i> 70 mm diam., plano-convex with a low broad umbo, brownish grey (6E2) with slightly darker color at the center, dull, dry, non-hygrophanous, with fibrillose to appressed-squamulose surface; margin decurved to straight, crenulate; context light yellow (4A5), soft. <i>Lamellae</i> free, ventricose, close, moderately thin, soft, pale orange (6A3) to brownish orange (6C8) and turning light brown (6D8) with age; edge finely fimbriate, concolorous with faces; lamellulae present, very variable in length, mostly in one tier. <i>Stipe</i> 65 × 4 mm, central, terete, tapered from the base to apex, solid, dark brown (6F4–5), slightly paler near the base, entirely pubescent; context light yellow (4A5); annulus absent. <i>Volva</i> rather thick, mostly free, saccate, fragile, greyish brown (6D3). <i>Spore print</i> pinkish (7A2). <i>Odor</i> indistinct. <i>Taste</i> mild. <i>Basidiospores</i> [60,1,1] (5.5)6–7–7.5(8.0) × 4–4.4–4.5(5) µm (Q = 1.2–1.8, Q* = 1.5), broadly ellipsoid to ellipsoid, oblong, ovoid, thickened wall, hyaline in 5% KOH. <i>Basidia</i> [30,1,1] (16)17–18.1–19(19.5) × (7)7.5–8– 8.5(9) µm (Q = 1.8–2.8, Q* = 2.3), tetrasporic, narrowly to broadly clavate, hyaline in 5% KOH. <i>Cheilocystidia</i> [20,1,1] (24)29–37.5–56(87) × (9)11–12.1–13(17) µm (Q = 1.6–6.4, Q* = 2.8), abundant, varied in size and shape, narrowly to broadly utriform, broadly lageniform, broadly fusiform, lecythiform, thin-walled, hyaline and colorless in 5% KOH. <i>Pleurocystidia</i> [20,1,1] (25)29–36.5–44(56) × (6)12–16.6–19(32) µm (Q = 1.5–4, Q* = 2.2), ellipsoid, obpyriform, utriform, broadly fusiform, lageniform, mostly thin-walled, hyaline in 5% KOH. <i>Hymenophoral trama</i> inverse, made up of thin-walled hyaline hyphae. <i>Pileipellis</i> a trichoderm; terminal elements with light brown (6D5) intracellular pigment, slightly darker on the swollen ends, [20,1,1] 77–177 × 11–31 µm. <i>Stipitipellis</i> a cutis; terminal elements with light brown (6D8) intracellular pigment [20,1,1] 75–162 × 8–15 µm, forming hairs. <i>Clamp connections</i> not seen in any part. Habitat and distribution:—Solitary, on the soil among grasses partly covered with litter. First described from Gia Lai Province in Vietnam. Now it is also known from northern Thailand. Specimen examined:— THAILAND. Chiang Rai Province: Mae Fah Luang University, 20.0449° N, 99.8943° E, lawn, 27 September 2018, <i>P. Sysouphanthong</i>, MFLU 19-1534 (GenBank MT 074696 - ITS). Notes:—According to the protologue, <i>Volvariella pulla</i> has medium to large basidiomes, with greyish brown or ash brown pileus and colored volva; the stipe is beige, ochraceous or greyish brown at base (Malysheva <i>et al.</i> 2019). The specimen from Thailand is morphologically similar to the holotype. However, the stipe was darker (dark brown). This difference might be due to the more advanced maturity or drier condition of the specimen, which was photographed and described after getting back to the laboratory (Figure 4). <i>Volvariella pulla</i> is recorded for the first time from Thailand after it was described from Vietnam in 2019 (Malysheva <i>et al</i>. 2019). Although <i>V. pulla</i> is morphologically most similar to <i>V. rostricystidiata</i> and <i>V. volvacea</i>, it is phylogenetically most closely related to <i>V. guttulosa</i> E.F. Malysheva &amp; A.V. Alexandrova (2019: 242) and <i>V. niveosulcata</i> E.F. Malysheva &amp; A.V. Alexandrova (2019: 240) (Figure 1).
description: Published as part of <i>Niego, Allen Grace T., Sysouphanthong, Phongeun, Thongklang, Naritsada, Hyde, Kevin D., Phonemany, Monthien, Phookamsak, Rungtiwa &amp; Raspé, Olivier, 2021, A new species of Volvariella and the first record of Volvariella pulla (Agaricales: incertae sedis) from Thailand, pp. 237-250 in Phytotaxa 480 (3)</i> on pages 244-246, DOI: 10.11646/phytotaxa.480.3.3, http://zenodo.org/record/5416887
description: {"references": ["Malysheva, E., Malysheca, V., Alexandrova, A. &amp; Morozova, O. (2019) Observations on Pluteaceae in Vietnam. 1. New species and new records of Volvariella. Phytotaxa 408 (4): 233 - 254. https: // doi. org / 10.11646 / phytotaxa. 408.4.1"]}