Phallus cremeo-ochraceus .2021

Phallus cremeo-ochraceus T. Li, T.H. Li & W.Q. Deng, sp. nov.2021 

MycoBank No: 840963

Holotype: China. Guizhou Province, Libo County, Xiaoqikong Scenic Area (25°15'12"N, 107°44'16"E, alt. 428 m), Zhang Ming, 2 July 2020 (GDGM 80700).

Morphological description

Sexual morph: Immature basidioma globose to subglobose, 55 × 50 mm, white to pinkish (9A2), purplish pink (14A4) when injured, smooth to very slightly rimose-areolate, attached to substrate by pinkish white to pinkish (9A2) rhizomorphs. Exoperidium membranous; endoperidium gelatinous, hyaline. Expanded basidioma up to 240 mm high when fresh. Receptacle 42–50 mm high, 50–60 mm broad, campanulate, cream to ochraceous (4A3-5), reticulated with irregularly ridges up to 4.0 mm deep, covered with gleba; apex truncate, with a pale yellow (4A2), prominent disc up to 15 mm in diam. Gleba olive brown (4E4-6, 4F5-8), mucilaginous. Pseudostipe subcylindrical, constricted at apex, enlarged downwards, 200–220 mm high when mature, 22– 27/32–38/40–45 mm broad (apex/middle/base), white (9A1) to slightly pinkish white (9A2), spongiform, hollow; pseudostipe wall 6–9 mm thick, usually consisting of small irregular chambers up to 3 mm. Volva obovate, 47–52 mm high, 40–45 mm broad, smooth, pinkish (9A2). Indusium well-developed, almost touching ground, white to very slightly pinkish, 190–210 mm in length, attached to the apex of pseudostipe, with polygonal to irregular meshes; meshes 7–20 mm wide, 2–4 mm thick. Rhizomorphs simple, yellowish white (4A2) to pinkish (9A2), 1–2 mm thick, about 20 mm long. Odour foetid (mainly from gleba). Taste mild. Basidiospores (3.2–)3.5–3.8(–4.0) × 1.2–1.5(–1.7) µm, Q= (2.0–)2.3–2.7(–3.0), Qm= 2.5 ± 0.5, cylindrical to long ellipsoid, hyaline and light olivaceous in H2 O and 5% KOH solution, inamyloid, thin-walled, smooth under light microscope. Hyphae of receptacle, pseudostipe and indusium hyaline or slightly yellowish, thin-walled pseudoparenchymatic, consisting of globose to subglobose or irregularly globose cells up to 30 µm in diam. Hyphae of volva tubular and branched, 4–8 µm in diam., thinwalled, smooth, septate, with clamp-connections. Hyphae of rhizomorphs filamentous, up to 8.0 µm in diam., thin-walled, smooth, septate, rarely branched.

Asexual morph: Undetermined.

Cultures:

Habitat: on soil with decaying litter under bamboo groves

Distribution: Solitary or scattered on soil with decaying litter under bamboo groves. So far known only from southwestern China (Guizhou). Season: July

GenBank Accession: lsu MZ890577; its  MZ890332.its  MZ890578; its MZ890333.

Notes:

Reference: [1] Li, T. ,  Deng, W. Q. ,  Song, B. , &  Li, T. H. . (2021). Two new species of phallus (phallaceae) with a white indusium from china.

Basidiomata of Phallus cremeo-ochraceus a-c GDGM 80700 d GDGM 85857. Scale bars: 5 cm (a), 2 cm (b, d), 1 cm (c)