Holotype:
THAILAND, Chiang Mai Province, Kanlayaniwattana district, Banwatchan watershed forest, 6 Nov. 2019, S. Sommai, P. Khamsuntorn, holotype BBH 49228.
Habitat:
On soil under Dipterocarpus (Dipterocarpaceae) trees.
Description:
Pileus medium-sized, 3.2-5.5 cm diam, pulvinate when young,plano-convex when mature, centre depressed with age; margin even, sometimes cracking; surface smooth, viscid when moist,greyish reddish purple when young, greyish purplish red when mature, unchanging when bruised. Lamellae free close, narrow, average, crowded, often forking, with scattered lamellulae, equal, white. Stipe 1.0-1.2 × 2.5-3.0 cm, central, equal sometimes tapering,longitudinally, smooth, dry, striate, solid, rigid, chalky, white, unchanging when bruised. Context 1.0-3.0 mm thick, firm, white, unchanging when cut or bruised. Odour indistinct. Taste unrecorded. Spore print not obtained. Basidiospores 5.7-7.5 × 4.2-6.9 μm, Q = 0.83-1.61, globose to subglobose, ornamentation amyloid, minute warts, not exceeding 1.0-2.0 μm in height; suprahilar plage indistinct; hilar appendix distinct, not amyloid, hyaline in 10% KOH. Basidia 21.7-35.3 × 4.0-8.2 μm, 4-spored with some 2-spored basidia present but rarely, clavate; sterigmata 4.0-6.0 μm in length, thick-walled. Lamellar trama mainly composed of hyphae, 5.0-6.0 μm width, without sphaerocysts. Hymenial cystidia numerous, ca 2133/mm2, 24.0-43.0 × 2.5-8.0 μm abundant, clavate to subfusiform, thin-walled, apex round and some mucronate, contents completely heteromorphous (granular or crystalline), reacting weakly greyish in sulfovanillin, abundant near the lamellae edges, 47.5-65.0 × 7.5-8.8 μm, similar to those on the sides. Lamellae edges fertile, marginal cells 12.5-23.8 × 3.8-7.5 μm, usually broadly clavate and shorter than basidia. Pileipellis metachromatic in Cresyl Blue, not sharply delimited from underlying context, 100-120 μm, deep, not gelatinised, a trichodermium, composed of hyphae 2.0-6.0 μm wide, thinwalled, septate. Acid-resistant incrustations absent. Hyphal terminations near the pileus margin occasionally branched, flexuous, thin-walled, septate, terminal cells 12.5-27.5 × 2.5-5.0 μm, conical, subulate, lageniform or cylindrical, thinwalled, branched. Terminal cells of hyphae near the pileus centre cylindrical, 12.5-20.0 × 2.5-5.0 μm. Pileus trama interwoven with sphaerocysts. Pileocystidia near the pileus margin very abundant, always 1-celled, cylindrical, often very long and originating in the context, 42.5-127.5 × 2.5-5.0 μm, thin-walled, with dispersed granulations or locally heteromorphous-banded, non-reaction in sulfovanillin. Pileocystidia near the pileus centre similar. Stipitipellis a cutis, composed of hyphae 2.0-5.0 μm wide, thin-walled, septate. Caulocystidia and clamp connections absent.
Reference:
Crous PW, Boers J, Holdom D, et al. (2022). Fungal Planet description sheets: 1383–1435. Persoonia 48: 261– 371.
DOI: https://doi.org/10.3767/persoonia.2022.48.08Species |
Strain |
Compound |
Pubchem CID |
Biological activity |
Reference |
|---|
|
Strain |
ITS | LSU | RPB2 |
|---|---|---|---|
| BBH 49228 | MT940813 | MT940823 | MT965687 |
| BBH 49230 | MT940814 | MT940824 | MT965688 |