Gloiothele larssonii Gorjón, 2012

Gorjón, Sergio P. & Jesus, Maria Aparecida De, 2012, Some new species and new records of corticioid fungi (Basidiomycota) from the Brazilian Amazon, Phytotaxa 67 (1), pp. 38-54 : 47

publication ID	https://doi.org/ 10.11646/phytotaxa.67.1.3
persistent identifier	https://treatment.plazi.org/id/CF1F87A5-855E-4F33-FF36-E920FC06639A
treatment provided by	Felipe
scientific name	Gloiothele larssonii Gorjón
status	sp. nov.

Treatment

Gloiothele larssonii Gorjón View in CoL sp. nov.

Species Gloiothele granulosa affinis sed differt basidiosporis minoribus et cystidiis vesiculosis.

Etymology: —Named to honor Dr. Karl-Henrik Larsson ( Sweden), in recognition of his contributions to the taxonomy of corticioid fungi.

Type: — BRAZIL. Presidente Figuereido : Uatumã Biological Reserve, 30 May 2009, on dead branches (angiosperm), leg. M.A. Jesus, LPM 6085 (holotypus) .

MycoBank: MB 800947

Basidiome resupinate, effused, hymenial surface grandinioid to minutely tuberculate with small papillae, isabelline to cream, margin abrupt, brownish. Hyphal system monomitic, hyphae with simple-septa, agglutinated, difficult to observe. Hymenium a dense palisade of basidia and hyphidia. Subhymenium composed of vesicular cystidia at different levels and agglutinated hyphae. Hyphidia filiform, smooth, scattered among the basidia but not conspicuous. Cystidia vesicular, with a widened subglobose basal part up to 15–20 µm wide, then prolonged in a tubular apical part up to 60–80 µm long, walls slightly thickened, with no granular contents in KOH or Melzer’s reagent, hyaline in KOH, yellowish in Melzer’s reagent, sulfobenzaldehyde reaction not tested, with a simple basal septum. Basidiospores ellipsoid, 3–4.5 × 2.5–3.5 µm, thin or with slightly thickened walls, smooth, with a faint amyloid reaction ( Figs. 9 View FIGURE 9–12 , 21 View FIGURE 17–22 ).

This new species is characterized by a grandinioid to tuberculate hymenophore, vesicular cystidia, and small basidiospores. Among described species in Gloiothele Bres. and Vesiculomyces E. Hagstr. it has the smallest basidiospores. Gloiothele granulosa Hjortstam & Spooner also has a granular hymenophore and small basidiospores but it differs in the tubular, subulate gloeocystidia and somewhat larger basidiospores measuring 4–5 × 3.5–4.5 µm ( Hjortstam et al. 1990). Vesiculomyces citrinus (Pers.) E. Hagstr. and Gloiothele ventricosa Ghobad-Nejhad has also cystidia with swollen basal part and homogeneous no granular contents, differing in the smooth hymenophore and larger, globose basidiospores.