You are here
All Fungi
Thedgonia ligustrina
Nomenclature
-
Family: DrepanopezizaceaeGenus: Thedgonia
SUMMARY
Leaf spots ± circular, rarely exceeding 10 mm diam., appearing zonate, with a central region of greyish brown tissue, the periphery medium brown and often with a dark purplish brown raised border.
Anamorph: colonies hypogenous, discrete or confluent, sometimes produced in concentric zones, buff to salmon-pink and contrasting with the brown tissue of the lesion. Mycelium immersed, aggregated into substomatal epidermal to subepidermal stromata to 50 µm diam. Conidiophores 23-55 µm long and 4-6 µm diam, well-differentiated from vegetative mycelium, in clusters but not synnematous, produced from the upper cells of the stromata, compact or divergent, straight or flexuous, branched and occasionally septate at the base, smooth, thin-walled, hyaline, cylindrical. Conidiogenous cells terminal, proliferating sympodially, hyaline, thin-walled, with 1-3 wide flat unthickened scars 2.5-3.5 µm diam. aggregated at the apices or less frequently along the lengths of the conidiogenous cells. Conidia 25-63 x 4-5.5 µm, in dry chains of 2-3 conidia, cylindrical, ± straight, 0- to 3-septate, hyaline, thin-walled, intercalary conidia truncate at each end, apical conidia truncate at the base, obtuse at the apex.
Teleomorph: not known.
Description adapted from Sutton (1973).