Aphanandromyces W.Rossi

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 214

Genus Aphanandromyces W.Rossi

MB#244

Mycologia 74 (3): 520 ( Rossi 1982a). –

Type species: A. audisioi W.Rossi (by monotypy)

Brief description

Monoecious. Receptacle three-celled ( Fig. 46D ). Cells II and III adnate on the top of cell I. Primary appendage consisting of a wedge-shaped basal cell, a suprabasal cell with a rounded protuberance on the outer, lower side, and a collapsing third cell above which supports two cells and four antheridia, although this portion typically falls off at maturity. Perithecium with five cells in each vertical row of outer wall cells.

Remarks

Monotypic. Tavares (1985) compared this genus with Synandromyces and Autophagomyces . The latter similarity was also mentioned by Rossi (1982a). Although appendage loss is common in other genera, the break off of the appendage by the collapse of one of its cells represents a unique characteristic among the Laboulbeniales .

Figures

Fig. 46. A–C. Acompsomyces stenichni (Scheloske) I.I.Tav. A, C. Submature thalli. B. Immature thallus showing the trichogyne (tr) and cells of receptacle (I, II, III). – D–E. Aphanandromyces audisioi W.Rossi. Mature thalli. D. With labelled cells of receptacle (I, II, III). E. With labelled primary appendage (pa), and antheridia (an). – F–H. Bordea denotata Haelew. & De Kesel. Mature thalli. Different parts of the thallus are labelled. Abbreviations: a = primary septum; an = antheridium; sx = spinous process or remains of the original spore apex; I, II, III = cells of primary receptacle. Arrows = cytoplasmatic constraint or septum-like marking above septum II–VI. Scale bars: 50 µm. Photographs from slides ZMUC C-F-123039 (A–C), ZMUC C-F-122509 (D), ZMUC C-F-122633 (E), ZMUC C-F-122556 (F–H).