Phaulomyces Thaxt.

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 64-66

Genus Phaulomyces Thaxt.

MB#3983

Memoirs of the American Academy of Arts and Sciences 16: 259 ( Thaxter 1931). –

Type species: P. corylophodis Thaxt.

Adelomyces Thaxt., Memoirs of the American Academy of Arts and Sciences 16: 306 ( Thaxter 1931) [MB#79]

Brief description

Probably all species are monoecious. Lower receptacle two-celled. Antheridia sessile or subsessile, on the basal cell of the primary appendage ( Fig. 11E , an); proliferating into branches in older thalli.

Remarks

The genus consists of 14 species, of which eight in Europe, two in Denmark. The most recently described species are P. mediterraneus ( Santamaria & Rossi 1999) , and P. ptilii ( Majewski 1999) . In this genus we find some of the smallest species of Laboulbeniales , with thalli not reaching 50 µm of length, like P. perparvus Santam. ( Santamaria 1992a) .

Key to the Danish species

1. Third cell of the receptacle slightly flattened to isodiametric. Appendage ramified with rather long branches; up to 250 µm long. Perithecium bent towards the appendage. On Col. Ciidae ........................................................................................... P. octotemni (T.Majewski) I.I.Tav.

– Third cell of the receptacle elongate, about twice longer than broad. Appendage unbranched; up to 180 µm long. Perithecium straight, or if bent, pointing towards the opposite direction of the appendage. On Col Staphylinidae Euaesthetinae ................................. P. euaestheti (Thaxt.) I.I.Tav.

Figures

Fig. 11. A–B. Euphoriomyces unilateralis T.Majewski.A. Paired thalli. B. Thallus with two perithecia, the lower immature, the upper overmature. – C. Phaulomyces euaestheti (Thaxt.) I.I.Tav., mature thallus with two perithecia and with the probable cell III labelled (III?). – D–E. Phaulomyces octotemni (T.Majewski) I.I.Tav. D. Paired thalli. E. Five thalli with a labelled antheridium (an) on the right immature thallus. Scale bars: A–B = 20 µm; C–E = 50 µm. Photographs from slides ZMUC C-F-123798 (A–B), ZMUC C-F-122484 (C), ZMUC C-F-124330 (D), ZMUC C-F-124329 (E).