Helotiales

Vibrisseaceae

Facesoffungi number: FoF 05884
Taxa are saprobic on dead plant material in aquatic and semi-aquatic environments.
Ascomata are apothecial and characterized by sessile to stipitate, cupulate or clavate receptacle. The ectal excipulum is composed of hyaline to brown, thin- or thick-walled cells of textura angularis to globulosa and medullary excipulum reduced or composed of textura oblita. Paraphyses are apically slightly swollen, sometimes branched and filiform. Asci are 8-spored, cylindric-clavate, long stipitate, sometimes amyloid and arising from croziers. Ascospores are filiform, 3–24-septate and partly fragmenting (Sanchez 1967, Sánchez & Korf 1966, Beaton & Weste 1980, 1983, Almeida et al. 2015, Seaver 1946, De Notaris 1863, Hustad & Miller 2011, Iturriaga & Korf 1990). Asexual morphs are hyphomycetous, phialidic and acervulus. Conidiophores are straight, cylindrical, hyaline and sometimes branched. Conidiogenous cells are holoblastic or polytretic. Conidia are ellipsoid or irregular in shape and unicellular or up to 7-septate (Hernandez-Restrepo et al. 2017, 2012, Shenoy et al. 2010, Kirschner & Oberwinkler 2001, Goh et al. 1998, Goh & Hyde 1998, Legon 2012, Crous et al. 2015, Iturriaga & Israel 1985).
Notes – This family forms a monophyletic clade close to the family Mollisiaceae. According to our phylogenetic analysis we observed the close relationship of the genera Acephala, Cheirospora, Diplococcium, Gorgoniceps and Strossmayeria to Vibrisseaceae. Hustad & Miller (2011) also showed the similar phylogenetic placement of these taxa within their phylogenetic analysis. Moreover Shenoy et al. (2010) showed that the Diplococcium and Vibrissea are genetically closely related. Within the phylogenetic analysis provided by Crous et al. (2015), the genera Diplococcium, Acephala and Cheirospora formed a monophyletic clade. Therefore, by considering the results our study and previous literature we placed the genera Acephala, Cheirospora, Diplococcium, Gorgoniceps and Strossmayeria, under the family Vibrisseaceae. Moreover, we removed Chlorovibrissea from this family as it is phylogenetically unrelated to Vibrisseaceae according to the results of our analyses and our results are in agreement with the results provided by Hustad & Miller (2011).

 

About Discomycetes

The website Discomycetes.org provides an up-to-date classification and account of genera and species of discomycetes.

Contact