Epithele aff. citrispora Boidin, Lanq. & Gilles, 1983

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 : 43

Epithele aff. citrispora Boidin, Lanq. & Gilles

Basidiome resupinate, effused, hymenial surface smooth with numerous sterile hyphal pegs, white to cream. Hyphal pegs composed of skeletal hyphae with many crystals. Generative hyphae with clamps, thin-walled, 2–3 µm in diam., skeletal hyphae thick-walled, about 2–4 µm in diam. Hyphidia and dendrohyphidia present in hymenium. Cystidia absent. Basidia short cylindrical, 25–30 × 8–10 µm, with four sterigmata, and a basal clamp. Basidiospores citriform, biapiculate, distal apiculus refractive in KOH, smooth, thin-walled, (11–)14–19 × 5.5–7 µm, IKI–, CB– ( Fig. 5 ).

The species agrees with E. citrispora in distinguishing characters of the species as the presence of skeletal hyphae in the hyphal pegs and context, dendrohyphidia, and in the citriform, acyanophilous basidiospores. The Amazonian specimen has slightly narrower basidiospores than described in the original description (7–9 µm wide) of E. citrispora from the Ivory Coast and Gabon ( Boidin & Lanquetin 1983). Epithele interrupta Bres. and E. nikau G. Cunn. are morphologically closely related species but differ in having fusiform, nonbiapiculate basidiospores ( Boidin & Gilles 2000).

Specimen examined: — BRAZIL, Roraima, Viruá National Park , 17 Nov 2009, on dead branches, leg. M.A. Jesus, LPM 6972 .

Figures

FIGURE 5–8. 5. Epithele aff. citrispora. 6. Gloeodontia halocystidiata (hymenophore and aculei section). 7. G. halocystidiata (hymenium). 8. Gloiothele incrustata. a. Basidiospores. ac. Aculei. b. Basidia. d. dendrohyphidia. ei. Encrusted hyphidia. g. Gloeocystidia. h. hyphae. ha. Halocystidia. hp. Hyphal pegs. i. Hyphidia. sk. Encrusted skeletocystidia.