Xylariales » Diatrypaceae


Quaternaria Tul. & C. Tul., Select. fung. carpol. 2: 104 (1863)

= Libertella Desm., Annls Sci. Nat., sér. 1 19: 275 (1830)

Facesoffungi number: FoF 07557

Sordariomycetes, Xylariomycetidae, Xylariales, Diatrypaceae


Saprobic on the host plant in terrestrial habitat. Sexual morph: see Mehrabi et al. (2016). Asexual morph: Conidiomata brown, acervular, separate or gregarious, subperidermal, immersed, simple or irregular in shape, unilocular, glabrous, thick-walled. Conidiomatal wall composed of pale brown to hyaline, thick-walled cells of texura angularis to intricata at the basal part. Conidiophores hyaline, branched, fasciculate, septate in association with branches, tapered towards the apices, formed from the inner cells of basal stroma. Conidiogenous cells hyaline, sympodial, cylindrical, integrated, indeterminate, smooth, thick-walled. Conidia hyaline, falcate or filiform, curved, aseptate, thin-walled, smooth, eguttulate.


Type species: Quaternaria quaternata (Pers.) J. Schröt., in Cohn, Krypt.-Fl. Schlesien 3.2(4): 451 (1897) [1908]


Notes: Libertella is characterized by acervular conidiomata, holoblastic, sympodial, integrated conidiogenous cells and hyaline, falcate or filiform conidia (Sutton 1980). Saccardo (1880) listed L. faginea Desm. collected on Fagus sylvatica as the generic type, while Clements and Shear (1931) gave L. betulina Desm., collected on Betula sp. as lectotype species. Sutton (1980) revised Libertella and considered L. faginea representative of the genus, following Saccardo's choice, because of its priority.






Li WJ, McKenZie EHC, Liu JK, Bhat DJ, Dai DQ, Caporesi E, Tian Q, Maharachcikumbura SSN, Luo ZL, Shang QJ, Zhang JF, Tangthirasunun N, Karunarathna SC, Xu JC, Hyde KD (2020) Taxonomy and phylogeny of hyaline-spored coelomycetes. Fungal Diversity 100: pages279–801.






About Coelomycetes

The website Coelomycetes.org provides an up-to-date classification and account of all genera of the class Coelomycetes.


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