Tremella subfibulifera 2021

Tremella subfibulifera 2021

MycoBank: 839829

Holotype:Brazil. Pernambuco, Recife, Jardim Botânico do Recife, on angiosperm wood, 17 June 2016, R. L. M. Alvarenga 334 (URM).

Description

Sexual morph：Basidioma. Sessile, when fresh gelatinous, pale white, foliose to irregularly cer ebriform, with undulate lobes, up to 3.0 cm long, 2.0 cm broad and 1.0 cm high from base, becoming firmly gelatinous and pale yellowish when dry, broadly attached to substratum. Internal features. Hyphae hyaline, smooth, slightly thick-walled, 2.0–4.0 µm in di ameter, branched, interwoven, with abundant clamp connections, clamp complexes and anastomoses; hyphidia, swollen cells, vesicles and haustoria absent; mature basidia thin walled, subglobose to broadly ellipsoid, with a basal clamp connection, (14.0–)14.4 20.3(–21.0) × (9.0–)12.8–16.3(–17.8) µm, L = 17.63 µm, W = 15.05 µm, Q = 1.17 (n = 30/1), sometimes their width greater than length, usually longitudinally or obliquely septate, 2–4-celled, with obvious oil drops; mature sterigmata often collapsed, juvenile sterigmata up to 15.0 µm long, 2.0–4.0 µm in diameter, slightly protuberant at apex; probasidia thin-walled, clavate to ellipsoid, guttulate, proliferating from terminal hy phae; basidiospores hyaline, thin-walled, ellipsoid apiculate, with oil drops, (5.0–)5.4 9.8(–10.0) × (4.0–)4.2–6.0(–6.4) µm, L = 8.0 µm, W = 5.3 µm, Q = 1.50 (n = 30/1); conidia massively present, originating from umbelliform conidiophores, hyaline, thin walled, variously shaped, ellipsoid, fusiform to cylindrical, 2.0–3.0 × 0.5–1.0 µm.

Asexual morph: Undetermined

Culture: Undetermined

Habitat: Undetermined:

Distribution:China

GenBank accessions: ITS MT445849,PartialnLSU MT425189;

Notes：Tremella subfibulifera nested in the clade of the T. fibulifera complex, and formed an independent lineage. It resembles T. fibulifera s.s., but T. fibulifera s.s. has larger basidiospores (7.0–10.0 × 6.0–7.0 µm vs. 5.4–9.8 × 4.2–6.0 µm) and the pres ence of branched hyphidia . In addition, T. subfibulifera are different from T. australe and T. fibulifera s.s. by 6.19% and 7.85% sequence differences in the ITS sequences and 2.23% and 2.10% in the partial nLSU sequences respectively.

Referenc: [1] Zamora, J. C. ,  Millanes, A. M. ,  Wedin, M. ,  Rico, V. J. , &  Perez-Ortega, S. . (2016). Understanding lichenicolous heterobasidiomycetes: new taxa and reproductive innovations in tremella s.l. Mycologia, 108(2), 381-396.

F T. subfibulifera (Alvarenga 334)

A basidiospores and secondary spores B germination tubes of basidiospores C conidia and conidiophores D–F basidia and probasidia G hy phae with clamp connections and clamp complexes H a section of hymenium. Scale bars: 10 µm (A–H).