Plenodomus libanotidis
Anamorph: Phoma-like. Conidiomata 240-320 µm diam., depressed-globose, papillate, thin-walled. Conidiophores absent. Conidiogenous cells formed from the inner layer of the conidiomata wall. Conidia 5-6.5 x 1.5-2.5 µm, cylindrical, aseptate, hyaline, biguttulate.
Teleomorph: ascostromata perithecia, 360-420 µm diam; densely grouped, at first covered by the epidermis, later bursting it and becoming superficial, oblate to spherical or conical-globose, black, shining, with sparse dark brown basal hyphae. Peridium very thick (60-120 µm), composed of large ± globose cells with thick dark brown walls. Interascal tissue of cellular pseudoparaphyses. Asci 100-125 x 8-10 µm, numerous, cylindrical, shortly stalked, thick-walled and fissitunicate, 8-spored. Ascospores obliquely uniseriate, 18.5-21 x 5-6 (-7) µm, fusiform, 3-septate, constricted at the middle, second cell from the apex slightly enlarged, yellowish brown, fairly thick-walled, smooth, without an epispore, gelatinous sheath or appendages.
Not formally assessed and probably overlooked. It would probably be assessed as of Least Concern.
Most records are from dead stems of Angelica sylvestris, with one record from Daucus carota and three from Foeniculum vulgare.
Widely distributed, from Cornwall to Mid Perthshire and Islay; reported from both Eire and Northern Ireland.