Rossiomyces falcatus (T.Majewski) R.K.Benj.

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 246

Rossiomyces falcatus (T.Majewski) R.K.Benj.

MB#484468

Fig. 55A–B

Aliso 19: 133 ( Benjamin 2001). – Basionym: Autophagomyces falcatus T.Majewski, Acta Mycologica 9(2): 229 ( Majewski 1973c) [MB#309403]. –

Type: “ On Cryptophagus pilosus Gyll. (Col. Cryptophagidae ): Kurzeszyn Nowy , Rawa Mazowiecka county, in a cellar, … leg. T. Majewski … 11.7.1972 ( TM…. 1044 – holotype)”; KRAM. [ Poland]

Diagnostic features

See genus description. [Detailed description: Majewski 1994b]

Distribution and hosts

Described from Poland, it has been collected in Finland ( Huldén 1983), United Kingdom ( Weir & Beakes 1993), USA, Italy ( Benjamin 2001), and Sweden ( Huggert 2010). Occurs on Cryptophagus spp. (Col. Cryptophagidae ).

Collections examined from Denmark

On Cryptophagus distinguendus Sturm, 1845 (Col. Cryptophagidae ) DENMARK – Nordvestsjaelland (NWZ) • Sonnerup skov ; 55°56.525′ N, 11°33.988′ E; PH60; 1 Apr. 2017; JP 253; JP det.; ZMUC C-F-122733 .

Remarks

First record from Denmark. This species has been reported in neighbouring countries, therefore its presence in Denmark is not surprising.

Figures

Fig. 55. A–B. Rossiomyces falcatus (T.Majewski) R.K.Benj. A. Mature thallus. B. Immature thallus showing labelled cells I, II, III, primary septum (a), trichogyne (tr), and spinous process from the original spore apex (sx). – C–D. Sphaleromyces lathrobii Thaxt. C. Mature thallus showing protrusion of cell III (arrow). D. Mature thallus from Spain showing labelled cells I, II and III. – E–G. Stichomyces conosomatis Thaxt. Mature thalli. Scale bars: 50 µm. Photographs from slides ZMUC C-F-122733 (A–B), ZMUC C-F-124186 (C), BCB-SS1543a (D), ZMUC C-F-122729 (E, G), ZMUC C-F-122630 (F).