Type: Foliicolous Fungi; Description: Conidiomata pycnothyrial, numerous, scattered randomly or in concentric circles, superficial, shield-shaped, circular, convex, depressed at the centre with a fringed margin, dark brown to black, 0.1 mm in diameter, connected to internal mycelium by a slender columella. Conidia elliptic to ovoid, 0-septate, 10–15 × 6–8 μm, brownish to olivaceous but appearing black in mass, pushed out when mature from beneath the outer edge of the conidioma. Leaf spots dark brown to reddish brown, roughly circular, 2–15 mm in diameter, with a distinct margin, often confluent, mainly on the upper surfaces of leaves.

Distribution: Auckland.; 1st Record: Boesewinkel (1982).

Significance: The cause of a leaf spot disease in Quercus spp. (Munkvold & Neely 1990), which is of no importance in New Zealand.; Host(s): Quercus cerris, Q. rubra.