Xenospadicoidales » Rhamphoriaceae

Rhodoveronaea

Rhodoveronaea Arzanlou, W. Gams & Crous, in Arzanlou, Groenewald, Gams, Braun, Shin & Crous, Stud. Mycol. 58: 89 (2007)

Diaporthomycetidae families incertae sedis, Rhamphoriaceae, Rhodoveronaea

Index Fungorum number: IF 504569; 2 morphological species; 2 species with sequence data

 

Saprobic on wood. Sexual morph: Ascomata immersed, nonstromatic, gregarious or solitary, dark brown to black, venter subglobose to conical; neck conical, emerging above the substratum, straight or slightly curved, ostiolum periphysate. Peridium two-layered, leathery. Paraphyses septate, hyaline, tapering towards the tip, longer than the asci. Asci 8-spored, unitunicate, cylindrical, broadly rounded at the apex, long-pedicellate. Ascospores fusiform, aseptate to multiseptate, hyaline. Asexual morph: Colonies velvety, floccose; surface olivaceous-grey to dark olivaceous-green, reverse olivaceous black. Hyphae pale olivaceous, smooth, thin-walled. Conidiophores arising vertically from creeping hyphae, straight or flexuose, simple, thick-walled, red-brown, with inflated basal cell. Conidiogenous cells polyblastic, terminally integrated, sympodial, smooth, thick-walled, pale brown, rachis straight, occasionally geniculate, with crowded, slightly prominent conidium-bearing denticles, denticles flat-tipped, slightly pigmented. Conidia solitary, ellipsoidal to obovoidal, aseptate to multiseptate, with a protruding base and a marginal basal frill, pale brown, thin or slightly thick-walled, smooth. Conidial secession schizolytic.  (Arzanlou et al. 2007, Réblová 2009, Luo et al. 2019).

 

 

Type species: Rhodoveronaea varioseptata Arzanlou, W. Gams & Crous, in Arzanlou, Groenewald, Gams, Braun, Shin & Crous, Stud. Mycol. 58: 91 (2007)

 

 

Notes: Rhodoveronaea was introduced by Arzanlou et al. (2007), with the characters similar to Veronaea and isolated from Bertia moriformis. This monophyletic genus was described as an asexually reproducing taxon with no known sexual morph (Arzanlou et al. 2007). Réblová (2009) showed the connection between the sexual and asexual morphs of Rhodoveronaea varioseptata, the latter which differs from the similar ramichloridium-like taxa by a basal, marginal conidial frill, and variably septate conidia.

 

 

Species illustrated in this entry:

Rhodoveronaea aquatica Z.L. Luo, K.D. Hyde & H.Y. Su

 

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