Haplomyces Thaxt.

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 323

Genus Haplomyces Thaxt.

MB#2232

Proceedings of the American Academy of Arts and Sciences 28: 159 ( Thaxter 1893). –

Type species: H. californicus Thaxt.

Brief description

Monoecious. Receptacle three-celled ( Fig. 79B ). Primary appendage entirely transformed into a compound antheridium. Primary septum constricted and ± darkened. Antheridium ellipsoidal to ovoidal, consisting of several irregularly arranged rows of sterile cells and phialides; bearing a spinous process on the upper, inner side ( Fig. 79G , sx) and a discharging pore on the opposite side ( Fig. 79G , po). Perithecium with four cells in each vertical row of outer wall cells.

Remarks

This genus consists of three species described by Thaxter (1893): H. californicus , H. texanus and H. virginianus , on Bledius spp. (Col. Staphylinidae Oxytelinae ). Only H. texanus was reported later and occurs in Europe.

Figures

Fig. 79. Haplomyces texanus Thaxt. A–D. Mature thalli. In B, cells I, II, and III are labelled. E–G. Antheridia in detail showing the spinous process on the antheridium (sx) and the discharging pore (po) in G. H. Perithecial apex in detail showing conspicuous trichogyne scar (sc). Scale bars: 50 µm. Photographs from slides ZMUC C-F-124196 (A), ZMUC C-F-124192 (B), ZMUC C-F-124193 (C), ZMUC C-F-124201 (D), ZMUC C-F-124211 (E), ZMUC C-F-124212 (F–H).