Type: Foliicolous Fungi; Description: Ascomata perithecial, scattered, immersed, globose or slightly flattened at the base, black, 0.2–0.3 mm in diameter, with a protuberant neck 80–124 m long; on the lower surfaces of fallen leaves. Asci cylindrical to clavate, 40–62 × 12–15 μm. Ascospores elliptical to fusiform, 1-septate, 10–20 × 4–6 μm, smooth, hyaline. Conidiomata acervular, yellowish brown, on elongated, vein-limited, brown necrotic areas on attached leaves. Conidia ovoid to elliptical, 0-septate, 6–16 × 3–6 μm, smooth, hyaline.

Distribution: Northland, Auckland, Waikato, Bay of Plenty, Wellington, Hawkes Bay, Nelson, Mid Canterbury, South Canterbury.; 1st Record: Brien (1939: as Gloeosporium nervisequum).

Significance: The cause of anthracnose of planes, causing serious damage in Platanus ×acerifolia (London plane) in occasional years. Symptoms of the disease have been described in detail by Neely (1976). The first evidence of infection is usually bud blight in early spring. The bud and sometimes the twig bearing the bud may be killed; if not, the fungus may invade shoot tissues after the buds have flushed, causing shoot blight to develop. The fungus also infects leaves during the summer and causes leaf blight.; Host(s): Platanus ×acerifolia, P. occidentalis, P. orientalis.