Hyphoderma puerense C.L. Zhao & Q.X. Guan, 2021

Guan, Qian-Xin, Li, Yi-Fei & Zhao, Chang-Lin, 2021, Morphological and phylogenetic evidence for recognition of two new species of Hyphoderma (Basidiomycota) from southern China, with a key to all Chinese Hyphoderma, MycoKeys 83, pp. 145-160 : 145

Hyphoderma puerense C.L. Zhao & Q.X. Guan sp. nov.

Figs 2 , 3

Holotype.

China. Yunnan Province, Puer, Jingdong County, Huilianghe Village, GPS co-ordinates 24°04'45"N, 100°56'32"E, altitude 1246 m a.s.l., on fallen angiosperm branch, leg. C.L. Zhao, 4 January 2019, CLZhao 9476 (SWFC).

Etymology.

Hyphoderma puerense (Lat.): referring to the locality (Puer) of the specimens.

Description.

Basidioma annual, resupinate, adnate, byssoid, without odour and taste when fresh, up to 15 cm long, 3 cm wide, 100-260 µm thick. Hymenial surface smooth to floccose, cream when fresh, cream to slightly buff on drying. Margin sterile, thinning out, narrow, cream.

Hyphal system monomitic, generative hyphae with clamps, colourless, thick-walled, frequently branched, interwoven, 2.5-4.5 µm in diameter; IKI-, CB-; tissues unchanged in KOH; subhymenial hyphae densely covered by crystals.

Cystidia tubular, encrusted with small crystals, 25-97 × 5.5-9.5 µm.

Basidia clavate to subcylindrical, slightly constricted in the middle to somewhat sinuous, with 4 sterigmata and a basal clamp, 20-30 × 4.5-6 µm.

Basidiospores ellipsoid, colourless, thin-walled, smooth, IKI-, CB-, (5.5-)6-7.5(-8) × 3-4.5(-5) µm, L = 6.53 µm, W = 3.71 µm, Q = 1.73-1.79 (n = 60/2).

Habitat and ecology.

Climate of the sample collection site is subtropical monsoon climate area, the forest type is evergreen angiosperm forest and samples were collected on fallen angiosperm branches.

Additional specimens examined.

China. Yunnan Province, Puer, Jingdong County, Huilianghe Village , GPS co-ordinates 24°04'45"N, 100°56'32"E, altitude 1246 m a.s.l., on fallen angiosperm branch, leg. C.L. Zhao, 5 January 2019, CLZhao 9583 (SWFC) .

Figures

Figure 2. Basidiomata of Hyphoderma puerense (holotype). Scale bars: 2 cm (a); 1 mm (b).

Figure 3. Microscopic structures of Hyphoderma puerense (holotype) a basidiospores b basidia and basidioles c cystidia d a section of hymenium. Scale bars: 5 µm (a); 10 µm (b-d).