Pleosporales » Phaeosphaeriaceae » Parastagonospora

Parastagonospora campignensis

Parastagonospora campignensis Tibpromma, Camporesi & K.D. Hyde [as 'cumpignensis'], in Li et al., Fungal Diversity 78: 10.1007/s13225-016-0366-9, [48] (2016)

In Li et al. 2016 the taxa named as Parastagonospora cumpignensis

Index Fungorum number: IF 635663; Facesofungi number: FoF 01767

Etymology: Name reflects the locality, Campigna, where this species was collected.

Holotype: MFLU 15–1480

Saprobic on Dactylis glomerata L. in terrestrial habitats. Sexual morph: Ascomata 205–310 μm high × 197–217 μm diam. (x̄ = 245 × 207 μm, n = 5), scattered, immersed in host tissue, globose to subglobose, thin-walled, solitary, with short neck, dark brown to black. Peridium 14–19 μm, thin-walled, comprising 2 layers of hyaline to brown cells of textura angularis. Hamathecium comprising numerous, 1.5–3 μm wide, septate, branched, pseudoparaphyses. Asci 62–92 × 9–12 μm (x̄ = 78 × 10 μm, n = 10), 8-spored, bitunicate, cylindrical to narrowly fusoid, short pedicellate, with a relatively a small ocular

chamber. Ascospores 26–31 × 6–7 μm (x̄ = 28 × 7 μm, n = 15), obliquely uniseriate, ellipsoid to narrowly obovoid, hyaline, becoming 3-septate with age, constricted at each septum, cells above central septum often broader than the lower ones, with acute rounded ends, constricted at the septa, with 1–2 distinct oil droplets in each cell, smooth-walled, without a mucilaginous sheath. Asexual morph: Undetermined.

            Culture characteristics: on MEA reaching 4cm diam. after 2 weeks at 16 °C, later with dense mycelium, with entire edge, flat, smooth with raised elevation, white-grey; hyphae septate branched, grey, thin-walled.

Material examined: ITALY, Campigna, Santa Sofia, Forlì-Cesena Province, on dead stem of Dactylis glomerata (Poaceae), 23 June 2012, Erio Camporesi, IT458 (MFLU 15–1480, holotype); ex-type living culture, MFLUCC 13–0573, MUCL; Ibid. (MFLU 16-0065bis, HKAS 92500tris, paratypes).

Notes: The phylogeny of the family Phaeosphaeriaceae is reconstructed in this study based on analysis combined LSU and ITS sequence data (Li et al. 2016). Parastagonospora campignensis clusters with P. dactylidis W.J. Li et al. and P. minima W.J. Li et al. with high support. Parastagonospora dactylidis and P. minima are asexual morphs with 3-septate, hyaline conidia, while P. campignensis is a sexual morph which shares 3-septate, hyaline ascospores with P. dactylidis and P. minima (Li et al. 2015). Parastagonospora campignensis is introduced as new species with an illustrated account and the phylogenetic trees of combined LSU and ITS sequence data confirm its placement in Parastagonospora (Li et al. 2016).