Laccaria macrobasidia H.J. Cho & Y.W. Lim, in Cho, Lee, Park, Park, Park, Cho, Kim & Lim, Mycobiology 48(4): 290 (2020)
Index Fungorum number: IF 835319; MycoBank number: MB 835319; Facesoffungi number: FoF 17111; Fig. 1
Pileus small, 20–35 mm diam., hemispherical to plane, orange brown to light brown, margin involute to decurved, entire, finely crenate or wavy. Lamellae adnate to sub-decurrent, thick, distant, light brown. Stipe 20–45 × 1–2 mm, tapering toward the apex, solid, becoming hollow with age, minutely fibrillose the entire length; concolorous with pileus, sometimes darker. Spore print not obtained.
Basidiospores 8.5–11.2 × 7.3–10.8 µm, Q = 1.0–1.3, subglobose to broadly ellipsoid, hyaline. Basidia 45–69 × 8–13 µm, clavate, hyaline, 4-spored; sterigmata 7–10 µm long. Pleurocystidia 18–42 × 3–9 µm, filamentous, hyaline, smooth. Stipitipellis composed of parallel, cylindrical, repent, hyaline hyphae. Pileipellis composed of interwoven, cylindrical, mostly repent, hyaline hyphae. Lamellar trama composed of subparallel to interwoven, cylindrical, repent, hyaline hyphae; subhymenium undiffer entiated. Clamp connections present in all hyphae.
Material examined – CHINA, Beijing, Yanqing District, 20 Sep 2023, Kai-Lin Liu, ZRL20236173 (HMAS 287968).
GenBank – HMAS 287968: PQ620227 (ITS).
Notes – The morphological and molecular data from the Chinese specimen is consistent with the holotype (Cho et al. 2020). New geographical record from Beijing, China.
Figure 1 – Laccaria macrobasidia. a, b Basidiomata. Scale bars = 2 cm.