Pleosporales » Lophiostomataceae


Sigarispora Thambug. & K.D. Hyde, in Thambugala et al., Fungal Diversity: 10.1007/s13225-015-0348-3, [40] (2015).

Index Fungorum number: IF 551255; Faceoffungi number: FoF 00823, 17 morphological species (Species Fungorum, 2022), 17 species with molecular data.

Saprobic on decaying culms of grasses (Poaceae) or dead herbaceous stems. Sexual morph: Ascomata solitary, scattered to gregarious, immersed, papilla erumpent through host surface, black, globose to subglobose, ostiolate. Ostiole crest or slit-like, central, rounded, papillate, with a pore-like opening, plugged by gelatinous tissue, made up of lightly pigmented, pseudoparenchymatous cells. Peridium composed small, light brown to dark brown, thin-walled cells of textura angularis, fusing at the outside with the host tissues. Hamathecium comprising 1–3μm wide, numerous, long, cellular, septate, branched, pseudoparaphyses, embedded in a gelatinous matrix, between and above the asci. Asci 8-spored, bitunicate, fissitunicate, cylindric-clavate, long pedicellate, apically rounded, with an ocular chamber. Ascospores uni to bi-seriate, overlapping, yellowish brown to dark brown, ellipsoidal-fusiform or cigar-shaped, 5–6 transversely septate or muriform, with 2–4 vertical septa, constricted at the central septum, smooth-walled, with or without a mucilaginous sheath, sometimes with terminal appendages. Asexual morph: Unknown (adapted from Thambugala et al. 2015).


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


          Notes: Sigarispora was introduced by Thambugala & Hyde (2015) based on morphology and multigene analysis to accommodate the type species S. ravennica. Sigarispora is distinct in having immersed to semi-immersed ascomata, a small crest-like ostiole, a peridium of elongate cells of textura angularis, and brown cigar-shaped, multi-septate ascospores (Thambugala et al. 2015). Molecular markers available for Sigarispora include LSU, SSU, ITS and TEF-1.


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