Hyphodontia subefibulata Jia J. Chen & L.W. Zhou, 2016

Chen, Jia-Jia, Zhou, Li-Wei, Ji, Xiao-Hong & Zaho, Chang-Lin, 2016, Hyphodontia dimitica and H. subefibulata spp. nov. (Schizoporaceae, Hymenochaetales) from southern China based on morphological and molecular characters, Phytotaxa 269 (1), pp. 1-13 : 7

Hyphodontia subefibulata Jia J. Chen & L.W. Zhou , sp. nov. ( Figs. 3–4 )

MycoBank no.: MB 815785

Differs from other Hyphodontia species by hydnoid hymenophore, buff-yellow to dark brown spines when dry, a monomitic hyphal structure with fairly thick-walled generative hyphae, presence of cystidia, and subglobose to broadly ellipsoid basidiospores measured as 3.2–4 × 3.0–3.5 μm.

Type.— CHINA. Jiangxi Prov.: Nanning, Fenyi County, Dagang Mountain, alt. 500 m, on rotten angiosperm wood, 19 September 2008, Dai 10526 (holotype, BJFC!).

Etymology.— Subefibulata (Lat.) referring to the species similar to H. efibulata J. Erikss. & Hjortstam.

Basidiocarps. —Annual, resupinate, inseparable, corky upon drying, up to 11 cm long, 2.5 cm wide, and 2.2 mm thick at center, without odor or taste. Hymenophore hydnoid. Fresh spines cream and soft, buff-yellow to dark brown when dry, up to 2 mm long, 3–5 per mm across base. Margin cottony, buff to grey buff, up to 1 mm wide. Subiculum very thin, soft corky, cream to buff, up to 0.2 mm thick.

Hyphal structure.— Hyphal system monomitic; generative hyphae with simple septa, IKI–, CB+; tissue unchanged in KOH.

Subiculum. —Generative hyphae hyaline, thick-walled, frequently branched, interwoven, flexuous, 3.5–6 μm in diam.

Hymenophoral trama. —Generative hyphae hyaline, thick-walled, moderate branched, straight, more or less subparallel along the spines, 2–4 μm in diam.

Hymenium .— Bladder-like to clavate cystidia present, hyaline, thin-walled, 35–55 × 5–8 μm; basidia clavate, with a simple basal septum and four sterigmata, 10–13 × 3.5–5 μm; basidioles dominant, in shape similar to basidia, slightly smaller than basidia.

Spores.— Basidiospores subglobose to broadly ellipsoid, hyaline, thin-walled, usually bearing one guttule, smooth, IKI–, CB–, (3.0–)3.2–4.0 × (2.8–)3.0–3.5 μm, L = 3.63 μm, W = 3.10 μm, Q = 1.12–1.17 (n = 60/2).

Additional specimen examined.— CHINA. Hainan Prov.: Changjiang County, Bawangling Nature Reserve, alt. 800 m, on rotten angiosperm wood, 9 May 2009, Dai 10803 (paratype, BJFC!).

Figures

FIGURE 3. Basidiocarps of Hyphodontia subefibulata (Dai 10803). a. A fresh basidiocarp. b. Spine surface.

FIGURE 4. Microscopic structures of Hyphodontia subefibulata (Dai 10526).a Basidiospores. b Basidia and basidioles. c Cystidia. d Hyphae from trama. e Hyphae from subiculum.