Polyporales » Polyporaceae » Neodatronia

Neodatronia gaoligongensis

Neodatronia gaoligongensis B.K. Cui, Hai J. Li & Y.C. Dai 2014, in Cui, et al., Fungal Diversity 97, 137–392 (2019)

Diagnosis: Basidiocarps annual, resupinate, corky, without odor or taste when fresh, becoming hard corky upon drying, up to 17 cm long, 3 cm wide and 0.4 mm thick at center. Pore surface cream to pale gray; pores angular, shallow, 5–8 per mm; dissepiments thin, usually entire to lacerate. Sterile margin indistinct. Subiculum yellowish brown, hard corky, up to 0.2 mm thick. Tubes concolorous with pore surface, fragile, up to 0.2 mm long. Hyphal system dimitic; generative hyphae bearing clamp connections; skeletal hyphae IKI–, CB+; tissues in subiculum darkening in KOH. Generative hyphae infrequent, hyaline, thin-walled, moderately branched, 1.8–2.8 µm in diam; skeletal hyphae dominant, yellowish-brown, thick-walled with a wide to narrow lumen, interwoven, moderately to frequently branched, straight to flexuous, with an unbranched, little differentiated, thick-walled basal stalk, 3–5 µm wide, up to 180 µm long, the branches 1.8–3.4 µm wide, 80–320 µm long. Generative hyphae infrequent, hyaline, thin-walled, moderately branched, 1.5–2.5 µm in diam; skeletal hyphae dominant, pale yellowish-brown, thick-walled with a narrow lumen, interwoven, frequently branched, straight to flexuous, then occasionally with lateral aborted processes, 3–4 µm wide in the main part, up to 50 µm long, branches well differentiated from the main part, 1.4–2 µm wide, 50–200 µm long. Dendrohyphidia abundant in the hymenium and dissepimental edges. Cystidia absent; cystidioles present, fusoid, thin-walled, smooth, 16–25 × 5–7 µm. Basidia clavate, with four sterigmata and a basal clamp connection, 17–21 × 6.5–9 µm; basidioles in shape similar to basidia, but smaller. Basidiospores cylindrical, hyaline, thin-walled, smooth, with one to two large guttules, IKI–, CB–, (6.8–)7–9.8(–10.2) × (–2.7)3–3.8(–4) µm, L = 8.1 µm, W = 3.2 µm, Q = 2.31–2.74 (n = 90/3).

Index Fungorum Number:  IF804549

Notes: Neodatronia gaoligongensis is characterized by its cream to pale gray pore surface, small pores (5–8 per mm), and the presence of dendrohyphidia in the hymenium and dissepimental edges (Li et al. 2014). Neodatronia gaoligongensis is similar to N. sinensis by having resupinate basidiocarps, but the latter species has larger pores (4–6 per mm), and narrower basidiospores (6.8–8 × 2–2.6 µm).

 

Figure 1.  Basidiocarps of Neodatronia gaoligongensis

 

 

Figure 2.  Microscopic structures of Neodatronia gaoligongensis (drawn from Cui 8055). a. Basidiospores; b. Basidia and basidioles; c. Cystidioles; d. Dendrohyphidia; e. Hyphae from trama. Bars: a–e = 10 µm

 

References:

Cui, B.K., & Li, H.J., & Ji, X., & Zhou, J.L., & Song, J. & Si, J., & Yang, Z.L., & Dai, Y.C. (2019). Species diversity, taxonomy and phylogeny of Polyporaceae (Basidiomycota) in China. Fungal Diversity 97, 137–392

Li, H.J., & Cui, B.K., & Dai, Y.C. (2014). Taxonomy and multi-gene phylogeny of Datronia (Polyporales, Basidiomycota). Persoonia 32, 170–182

 

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