Pleosporales » Lophiostomataceae

Sigarispora

Sigarispora Thambug. & K.D. Hyde

Index Fungorum number: IF 551255

 

Saprobic on decaying culms of grasses (Poaceae), dead herbaceous stems or submerged wood. Sexual morph: Ascomata solitary, scattered to gregarious, semi-immersed to immersed, with papilla erumpent through host surface, globose to subglobose, black, ostiolate. Ostiole crest- or slit- like, central, rounded, with a pore-like opening and plugged by gelatinous tissue, comprising pseudoparenchymatous cells. Peridium composed of light to dark brown, small, thin-walled cells of textura angularis, fusing with the host tissues in outer layer. Pseudoparaphyses numerous, cellular, long, hyaline, septate, branched. Asci 8-spored, bitunicate, fissitunicate, cylindric-clavate, pedicellate, with an ocular chamber. Ascospores uni- to bi-seriate, yellowish brown to dark brown, cigar-shaped, or ellipsoidal-fusiform, transversely septate or muriform, smooth-walled, with or without a mucilaginous sheath, sometimes with terminal appendages (Thambugala et al. 2015). Asexual morph: Undetermined.

 

Type species: Sigarispora ravennica (Tibpromma, Camporesi & K.D. Hyde) Thambug. & K.D. Hyde

 

Notes: Sigarispora was introduced for some lophiostoma-like species (Thambugala et al. 2015). Sigarispora is phylogenetically separated from Lophiostoma (Thambugala et al. (2015); Dong et al. 2020) and characterized by yellowish brown to dark brown, cigar-shaped or ellipsoidal-fusiform ascospores which are unlike the hyaline to yellowish brown, fusiform ascospores of Lophiostoma. Bao et al. (2019) reported a freshwater species S. clavata D.F. Bao et al. from China and characterized by dark brown to yellowish brown, ellipsoidal to clavate ascospores.

 

References

Bao DF, Su HY, Maharachchikumbur SSN, Liu JK, Nalumpang S, Luo ZL, Hyde KD (2019) Lignicolous freshwater fungi from China and Thailand: Multi-gene phylogeny reveals new species and new records in Lophiostomataceae. Mycosphere 10:1080–1099

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

Thambugala KM, Hyde KD, Tanaka K, Tian Q, Wanasinghe DN, Ariyawansa HA, Jayasiri SC, Boonmee S, Camporesi E, Hashimoto A, Hirayama K, Schumacher RK, Promputtha I, Liu ZY (2015) Towards a natural classification and backbone tree for Lophiostomataceae, Floricolaceae, and Amorosiaceae fam. nov. Fungal Divers 74:199–266

 

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