Pleosporales » Dictyosporiaceae » Dictyosporium

Dictyosporium biseriale

Dictyosporium biseriale D.M. Hu, L. Cai & K.D. Hyde

 

Index Fungorum number: 518633

Etymology: biseriale, referring to the 2-armed conidia.

Holotype: IFRDC 8884

 

Sexual morph: Undetermined. Asexual morph: Sporodochia on natural substratum punctiform, scattered, black, granular. Mycelium mostly immersed in the substratum, composed of branched, septate, smooth hyphae. Conidiophores micronematous, mononematous, thin-walled, septate, sparsely branched, pale brown, 12–20 × 3–5 μm. Conidiogenous cells monoblastic, integrated, terminal, determinate, pale brown, cylindrical. Conidia 22–30 × 9–10 μm (x̄ = 26 × 10 μm, n = 25), complanate, cheiroid, smoothwalled, pale brown to brown, consisting of 10–17 cells arranged in 2

rows, with a cuneiform hyaline cell attached at the base of one of the arms, conidial secession rhexolytic. (Hu et al. 2010)

 

Material examined: CHINA, Yunnan Province, Xishuangbanna, Mengla stream, on submerged wood, 2 Apr 2009, leg. D. M. Hu (IFRDC 8884).

 

Freshwater distribution: Yunnan, China (Hu et al. 2010)

 

References

Hu DM, Cai L, Chen H, Bahkali AH, Hyde KD (2010) Four new freshwater fungi associated with submerged wood from Southwest Asia. Sydowia 62:191–203

 

Figs. 20–29. Dictyosporium biseriale. 20. Sporodochia on submerged wood, 21–23. Conidiophores, 24–28. Conidia, 29. An arm of a conidium. Scale bars: 20 = 100 μm, 21–29 = 5 μm. (Hu et al. 2010)

 

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