Pleosporales » Astrosphaeriellaceae » Astrosphaeriella

Astrosphaeriella stellata

Astrosphaeriella stellata (Pat.) Sacc.

Basionym: Amphisphaeria stellata Pat., Bull. Soc. mycol. Fr. 29: 223 (1913)

Synonymy: Astrosphaeriella stellata var. palmicola F. San Martín & P. Lavín, Lavin & Lavín, Acta Bot. Mexicana 46: 22 (1999)

Astrosphaeriella bambusella Höhn., Sber. Akad. Wiss. Wien, Math.-naturw. Kl., Abt. 1 129: 168 (1920)

Astrosphaeriella fuscomaculans W. Yamam., Sci. Rep.Hyogo Univ. Agric., Ser. 2, Agr. Biol. 1: 63 (1954)

Microthelia fuscomaculans (W. Yamam.) E. Müll., Beitr. Kryptfl. Schweiz 11(no. 2): 286 (1962)

 

Facesoffungi number: FoF 01227

 

Sexual morph: Ascomata 200–250 µm high, 800–950 µm diam, superficial, erumpent, dome-shaped to mammiform, with a flattened base, with slit-like ostiole, gregarious, black. Peridium 50-100 µm wide, cells of outer layer with blackish and amorphous material; inner layer composed of thin-walled, polygonal cells, cells are flattened at the base. Pseudoparaphyses trabeculate, numerous, 2–3 µm wide, filamentous, septate. Asci 150–250 × 13–19 µm (x̄ = 188 × 15 µm, n = 20), bitunicate, fissitunicate, ectoascus rupturing at the apex, 8-spored, cylindrical to cylindric-clavate, pedicellate. Ascospores 48–60 × 7–9 µm (x̄ = 55 × 7.5 µm, n = 35), overlapping uni- to biseriate, 1-septate, elongate fusiform, guttulate, constricted at the septum, hyaline, surrounded by a mucilaginous sheath. (Description from Tsui et al. 2001). Asexual morph: Undetermined.

 

Material examined: CHINA. HONG KONG: Tai Po, Pak Au Shek, on submerged bamboo in the Lam Tusen River, Aug 1998, K M. Tsui & Jackie Chan, KM 287 [HKU(M) 16118, culture (HKUCC 6856)], May 2000, K M. Tsui, KM287 (HKU(M) 16113).

 

Freshwater distribution: China (Tsui et al. 2001; Wong and Hyde 2001; Luo et al. 2004; Hu et al. 2013), Philippines (Cai et al. 2003)

 

References

Cai L, Zhang KQ, McKenzie EHC, Hyde KD (2003) Freshwater fungi from bamboo and wood submerged in the Liput River in the Philippines. Fungal Divers 13:1–12

Dong W, Wang B, Hyde KD, McKenzie EHC, Raja HA, Tanaka K, Abdel-Wahab MA, Abdel-Aziz FA, Doilom M, Phookamsak R, Hongsanan S, Wanasinghe DN, Yu X-D, Wang G-N, Yang H, Yang J, Thambugala KM, Tian Q, Luo Z-L, Yang J-B, Miller AN, Fournier J, Boonmee S, Hu D-M, Nalumpang S, Zhang H (2020) Freshwater Dothideomycetes. Fungal Divers 105:319–575

Luo J, Yin J, Cai L, Zhang KQ, Hyde KD (2004) Freshwater fungi in Lake Dianchi, a heavily polluted lake in Yunnan, China. Fungal Divers 16:93–112

Tsui CKM, Hyde KD, Hodgkiss IJ (2001) Paraniesslia tuberculata gen. et sp. nov., and new records or species of Clypeosphaeria, Leptosphaeria and Astrosphaeriella in Hong Kong freshwater habitats. Mycologia 93:1002–1009

Wong MKM, Hyde KD (2001) Diversity of fungi on six species of Gramineae and one species of Cyperaceae in Hong Kong. Mycol Res 105:1485–1491

Figure 1. Astrosphaeriella stellata (Material examined: VIETNAM, Hanoi, on Bamboo (sur Bambou), 17 April 1911, M. Duport 451, FH 00290284, Pat 552, holotype). a. Herbarium label and specimen, b. Ascostromata on host surface, c. Section through ascostroma, d. Section through peridium, e. Pseudoparaphyses, f–h. Bitunicate asci, i. Ocular chamber, j–p. Ascospores. Scale bars: d, e, i–p = 20 μm, f–h = 50 μm. (Dong et al. 2020)

 

Figures 31-39. Light (31) and differential interference contrast (32-39) micrographs of Astrosphaeriella stellata [from HKU(M) 16118], 31. Appearance of ascomata on wood, 32. Section of the ascoma, 33-34. Asci, 35. Asci with pseudoparaphyses, 36-39. Ascospores. Scale bars: 31 = 900 µm, 32 = 50 µm, 33 = 15 µm, 34-35 = 20 µm, 36-39 = 8 µm. (Image from Tsui et al. 2001)

 

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