Mycosphaerellales » Mycosphaerellaceae


Pseudovularia Speg., Anal. Mus. nac. B. Aires, Ser. 3 13: 418 (1910) [1911].

Index Fungorum number: IF 9622; Facesoffungi number: FoF 08648, 1 morphological species (Species Fungorum 2022), no molecular data available.

Leaf spots suborbicular, 3–5 mm diam., lacking a definite margin, greyish in the centre and rather reddish at the edge. Sexual morph: Unknown. Asexual morph: Conidiophores hypophyllous, emerging through the stomata in dense fascicles of 24 or more from a colorless stroma. Conidiophores colorless, smooth, erect, thin-walled, continuous or with a few distant septa not readily visible, substraight but slightly angled at the old conidial scars. Old conidial scars conspicuously thickened and slightly prominent. Conidia colorless, subglobose or broadly ellipsoid, with a conspicuously thickened and slightly prominent convex hilum, continuous, very minutely and closely rough-walled (adapted from Deighton 1972).


Type species: Pseudovularia trifolii Speg.


Notes: Pseudovularia is characterised by suborbicular leaf spot, hypophyllous conidiophores which emerge through the stomata, thickened and slightly prominent conidial scars and colorless, subglobose or broadly ellipsoid conidia with conspicuously thickened hilum. Deighton (1972) proposed a new name Ramularia argentinensis for Pseudovularia trifolii. Braun (1998) listed Pseudovularia trifolii as a synonym of Ramularia sphaeroidea and this was followed by Videira et al. (2016, 2017). The holotype material of P. trifolii cannot be located. The placement of Pseudovularia in Mycosphaerellaceae is doubtful. Fresh collections with DNA sequence data are needed to confirm the taxonomic placement of Pseudovularia.


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