Phallus dongsun T.H. Li, T. Li, Chun Y. Deng, W.Q. Deng & Zhu L. Yang, sp. nov. 2020
MycoBank ID: MB833125
Holotype: CHINA. Guizhou Province, Guiyang City, Xifeng County, at 106°44′39′′ E, 27°05′51′′ N, 1100 m alt., 8 November 2018, cultivated, coll. by Chunying Deng (Holotype, GDGM 75402).
Morphological description
Immature basidiomata globose to subglobose, 45–60 × 45–50 mm, yellowish white (1A2) to pale yellow (2A3), slightly smooth with rimose-areolate pattern on the surface, attached to the substrate by yellowish white (1A2) rhizomorphs. Exoperidium membranous, endoperidium gelatinous, hyaline. Mature basidiomata 150–250 × 25–50 mm. Receptacle ovoid to bell-shape, dull white (1A1) to pale white (3A3), 48–60 mm high, 25–45 mm broad, surface strongly reticulated with irregularly ridges up to 8 mm deep, often covered with gleba; apex truncate, with or without a prominent white disc up to 11 mm in diam., and with a perforate pore 3–4 mm in diam. at the apex. Gleba olive brown (4E4-8, 4F3-8), mucilaginous. Pseudostipe cylindrical or fusiform, usually tapered at the apex and bottom, enlarged in the middle, 160–220 mm high, 6–12/17–45/5–15 mm thick (apex/middle/base), white (1A1) to yellowish white (1A2), spongiform, hollow; pseudostipe wall 6–9 mm thick, usually consisting of small irregular chambers, 1–3 mm in diam. Volva subglobose or slightly obovate, 50 mm high, 38 mm broad, smooth or slightly rugose, yellowish white (1A2–4A2). Rhizomorphs simple, white (1A1) to yellowish white (2A3), 1–2 mm thick, up to 32 mm long. Odour foetid (mainly from gleba). taste mild.
Basidiospores cylindrical to long ellipsoid, [60/2/5] (3.5–)3.8–4.2(–4.4) × 1.8–2.3 μm, Q= (1.64–)1.78–1.96 (– 2.11), Qm = 1.88 ± 0.12, hyaline and light olivaceous in H2O and 5% KOH solution, inamyloid, thin-walled, usually with one or two droplets, smooth under the light microscope, truncate at one end under the SEM. Hyphae of receptacle and pseudostipe hyaline, thin-walled, pseudoparenchymatic, consisting of globose to subglobose or irregularly globose structures, up to 25 μm in diam. Hyphae of volva tubular and branched, 4–10 μm in diam., thin-walled, smooth, septate, with clamp-connections. Hyphae of rhizomorphs filamentous, up to 8.0 μm in diam., thin-walled, smooth, septate, rarely branched.
Habitat: on soil with decaying litter under the bamboo groves dominated by Phyllostachys edulis
Distribution: the subtropical regions of China, especially from Guizhou, Hunan and Zhejiang Provinces.
GenBank Accession: LSU MN264676, MN264678, MN264677, MN264679, MN264680; ITS MN307394, MN307396, MN307395, MN307397, MN307398
Notes:
Reference: TING LI1,4, TAIHUI LI1,5*, WANGQIU DENG1,6 et al.
Basidiomata of Phallus dongsun. a–d: GDGM 75402 (holotype) and its sections. e–i: GDGM 75582. j: GDGM 75346. k: GDGM 75343. l: GDGM 75402 (dried specimen). Scale bars: a–l = 20 mm. Photos by Ting Li.
