Cantharellus subcibarius Corner, 1966

Buyck, Bart, Eyssartier, Guillaume, Dima, Bálint, Consiglio, Giovanni, Noordeloos, Machiel Evert, Papp, Viktor, Bera, Ishika, Ghosh, Aniket, Rossi, Walter, Leonardi, Marco & Das, Kanad, 2021, Fungal Biodiversity Profiles 101 - 110, Cryptogamie, Mycologie 20 (5), pp. 63-89 : 69

103. Cantharellus subcibarius Corner

( Figs 4 ; 5 )

Annals of Botany Memoir 2: 58 (1966).

Original diagnosis (from Corner 1966): « Solitarius v. subcaespitosus , ex integro pallide subochraceus v. sordide albidocremeus. Pileus 7 cm latus, infundibuliformis , laevis vel centro subfloccoso-squamulosus; margine incurvato, dein undulato-expanso. Stipes 3-6 cm × 4-10 mm, solidus , laevis, fibrosus, subcylindricus. Plicae profunde decurrentes, irregulariter ter v. quater dichotomae, subdistantes, 1-2 mm latae, obtusae, intervallis marginem versus leniter reticulatis et plicis brevioribus praeditis, parte stipitis superiori saepe hymenio laevi obtecto. Contextus firmus, fibrosus, 3-8 mm crassus in centro pilei, concolor; odore nullo. Ad terram in silva. Sporae 7,5-9 × 5,5-7 µm, albidae, obtusae. Basidia 50-65 × 7,5-8,5 µm, ad 15 µm projicientia; sterigmatibus 4-5-6, plerumque 5, 4-6 µm longis, curvatis. Hymenium incrassatum; cystidiis nullis. Hyphae 2,5-10 µm latae, fibulatae, irregulariter inflatae, tunicis haud v. vix incrassatis. Pilei stipitisque superficies hyphis 2,5-8 µm latis, haud fasciculatis, laxe subpatentibus praedita.».

HOLOTYPE. — Malaysia. North Borneo , Kinabalu, 13.VI.1961, leg. & det. E.J.H. Corner 571 (K holotypus, PC isotypus).

ETYMOLOGY. — Named after its resemblance to Cantharellus cibarius .

DESCRIPTION

Spores

Large, shortly ellipsoid, (7.3)7.5-7.89-8.3(8.5) × (5.2)5.6- 6.10-6.5(6.9) µm, Q = (1.12)1.23-1.30-1.36(1.40), smooth, with a small apiculus.

Basidia

75-95 × 8-10 µm, narrowly clavate, long and quite regular in outline, predominantly 5-spored, with large sterigmata.

Subhymenium

Filamentous.

Pileipellis

Composed of intertwined, flexuous hyphal terminations of remarkably variable diameter but mostly rather narrow, 3-6µm diam., some reaching 8-12 µm diam., all with remarkably spaced septa and slightly thickened walls, many with a refringent aspect (as if filled with something); terminal cells often narrower than the subapical ones and long, mostly between 50-100 µm, but also longer, obtuse-rounded at the tip; the widest terminal cells shorter, c. 30-70 µm, and mostly narrowing at the tip.

Hyphae of context

Underneath also very different in diam, mostly very wide.

Clamp connections

Everywhere, very distinct.

NOTES

Our description of the isotype in PC is in complete agreement with the observations made by Eyssartier (2001) on the material deposited in BR [spores 7.5-7.97-8.5 × 6-6.24-6.5 µm, Q = 1.15-1.28-1.46; basidia 75-100 × 7.5-9 µm, (4) 5-6 spored;

hyphae in pileipellis 3-5(8) µm diam., thick-walled. Clamps abundant]. This tropical species differs from other known yellow Cantharellus in Asia especially in the larger size of its spores ( Shao et al. 2021).

Figures

FIG. 4. — A, B, Cantharellus subcibarius Corner (isotype, PC0142538). Scale bar: 5 mm. Photos: B. Buyck.

FIG. 5. — Cantharellus subcibarius Corner (syntype PC), microscopic features: A, spores; B, basidia and basidiola; C, hyphal extremities of the pileipellis. Scale bar: A, 5 μm; B, C, 10 μm. Drawings: B. Buyck.