Pleosporales » Phaeosphaeriaceae » Amarenographium

Amarenographium ammophilae

Amarenographium ammophilae Wanas., Camporesi, Wijayaw. & K.D. Hyde, in Wijayawardene et al., Fungal Diversity: 10.1007/s13225-016-0360-2, [35] (2016)

Index Fungorum number: IF 551944; Facesofungi number: FoF 01895

Etymology: Named after the host genus.

Holotype: MFLU 16-0240

Saprobic on various substrates on Ammophila arenaria. Sexual morph: Undetermined. Asexual morph: Conidiomata 120–150 μm diam., 90–120 μm high, pycnidial, stromatic, solitary, immersed in the host, uni-loculate, globose to subglobose, dark brown to black, ostiolate, apapillate. Conidiomata wall composed of thin-walled, blackish to dark brown-walled cells of textura angularis. Conidiophores reduced to conidiogenous cells. Conidiogenous cells holoblastic, phialidic, ampulliform to cylindrical, unbranched, septate, hyaline, smooth. Conidia 30–50 × 12–18 μm (x̄ = 39.9 × 14.2 μm, n = 50), clavate, ellipsoid, ovoid or fusoid, apex rounded, base acute or truncate, muriform, constrictions at septa, yellowish brown to brown, with apical gelatinous sheath, and basal gelatinous sheath.

Culture characteristics: Colonies slow growing, reaching 30mm diam., after three weeks, circular, olivaceous-grey, spreading, flattened, felt-like, sparse, aerial, surface, smooth with crenate edge, filamentous; reverse irongrey. Sporulating after 4 weeks.

Material examined: Italy, Ravenna [RA] Province, Lido di Dante, dead stems of Ammophila arenaria (Poaceae), 8 December 2014, Erio Camporesi, IT 2293 (MFLU 16-0240, holotype); ex-type living cultures MFLUCC 16-0296.


Notes: Farr and Rossman (2016) reported Amarenographium metableticum from Ammophila arenaria (conidial dimensions: 22–30 × 9–13 μm fide Eriksson 1982). Our collection has larger conidia, thus we introduce a new species based on host association and morphology (Wijayawardene et al. 2016).