Sidera vesiculosa Rui Du & M. Zhou, 2019

Du, Rui, Wang, Li, Zhou, Meng & Chen, Jiajia, 2019, A new species of Sidera (Hymenochaetales, Basidiomycota) from tropical Asia, Phytotaxa 387 (2), pp. 165-171 : 168-169

publication ID	https://doi.org/ 10.11646/phytotaxa.387.2.9
persistent identifier	https://treatment.plazi.org/id/03B50E65-FFDE-FFEB-93C2-F9BD97462875
treatment provided by	Felipe
scientific name	Sidera vesiculosa Rui Du & M. Zhou
status	sp. nov.

Treatment

Sidera vesiculosa Rui Du & M. Zhou View in CoL , sp. nov. ( Figs. 2–3 View FIGURE 2 View FIGURE 3 )

MycoBank no.:—MB 827068

Type:— SINGAPORE. Bukit Timah Nature Reserve, on rotten angiosperm wood, 19 July 2017 (holotype, BJFC 025377).

Etymology:— Vesiculosa (Lat.) : refers to vesicular cells which are swollen tips of hyphae.

Basidiocarps:—Resupinate, annual, soft and waxy when fresh, soft corky when dry, up to 16 cm long, 8 cm wide, and around 3 mm thick at center. Pore surface snow white when fresh, becoming cream when dry; sterile margin narrow, fimbriate, thinning out, pores round, freely arranged, 7–9 per mm; dissepiments thin, entire; subiculum very thin to almost absent, less than 1mm thick; tubes concolorous with poroid surface, up to 3 mm long.

Hyphal structure:—Hyphal system monomitic, generative hyphae bearing clamp connections, IKI–, CB –, all hyphae unchanged in KOH.

Subiculum:—Generative hyphae hyaline, frequently branched, some branches distinctly swollen at tips, in shape globose, bottle-shaped or irregularly elongated, slightly winding, loosely interwoven, 2–3 μm in diameter; rosette-like crystals frequently present, 2.5–10 μm in diameter, some irregular rhomboidal crystals also present.

Tubes:—Generative hyphae hyaline, thin-walled, frequently “eggplant-shaped” branched, interwoven, 2–3 μm in diameter; rosette-like and irregular rhomboidal crystals abundant. Cystidia present, hyaline, thin-walled, basally swollen, with a sharp or often hyphoid neck, 7.5–25 × 2.0–4.0 μm. Basidia barrel-shaped, hyaline, bearing four sterigmata and a basal clamp connection, 7.5–10 × 3.5–5.5 μm; basidioles in shape similar to basidia, but slightly shorter.

Basidiospores:—Allantoid to lunate, thin-walled, smooth, with a one to a few small guttules, IKI–, CB –, (2.7–) 2.9–3.7(–3.8) × 0.6–1.0(–1.1) μm, L = 3.29 μm, W = 0.90 μm, Q = 3.17–4.1 (n = 60/2).

Additional specimen examined (paratype): — SINGAPORE. Bukit Timah Nature Reserve, on rotten angiosperm wood, 19 July 2017 ( BJFC 025367).