Pleosporales » Melanommataceae


Phragmotrichum Kunze, in Kunze & Schmidt, Mykologische Hefte (Leipzig) 2: 84 (1823).

Index Fungorum number: IF 9376; Facesoffungi number: FoF 08297, 5 morphological species (Species Fungorum, 2022), 6 species with molecular data.

Saprobic on host. Sexual morph: Unknown. Asexual morph: Conidiomata stromatic to cupulate, immersed to erumpent, solitary to gregarious, dark brown, wall of textura angularisConidiophores hyaline, branched at base, septate, smooth, cylindrical, formed from inner layer of conidioma. Conidiogenous cells thallic, integrated, hyaline, smooth, cylindrical, producing unbranched, basipetal chains of conidia. Conidia brown, muriformly septate, with transverse and longitudinal septa, truncate at both ends, straight to curved, fusoid to ellipsoid, smooth-walled. Sexual morph: Unknown (adapted from Crous et al. 2019).


Type species: Phragmotrichum chailletii Kunze, in Kunze & Schmidt


Notes: Phragmotrichum was introduced by Kunze in Kunze and Schmidt (1823) with P. chailletii as type species. Phragmotrichum is characterized by stromatic to cupulate conidiomata, hyaline, cylindrical conidiophores, thallic, integrated, hyaline, smooth, cylindrical conidiogenous cells and brown, muriformly septate, straight to curved, fusoid to ellipsoid conidia. The holotype of P. chailletii is lost and believed to be destroyed during World War II (Crous et al., 2019). The holotype specimen was found on fallen cones of “Pinus abies” in Switzerland (Crous et al., 2019). Crous et al. (2019) designated a neotype also collected from fallen cones of Picea abies (Pinaceae). Crous et al. (2019) also confirmed the taxonomic placement of Phragmotrichum in Melanommataceae. Phragmotrichum is morphologically and phylogenetically a distinct genus in Melanommataceae. Molecular markers available for Phragmotrichum are LSU, SSU, ITS, TEF1 and RPB2.


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