Amazonia atlantiicola Lini K. Mathew & Neeta N. Nair sp. nov., Index Fungorum number: 552462

Etymology: Name after the host

Colonies amphigenous, mostly epiphyllous, subdense, velvety, up to 2 mm in diameter, confluent. Hyphae straight to substraight, branching alternate to opposite at acute to wide angles, loosely to closely reticulate, cells 14.4–38.4 × 4.8–6 μm. Appressoria alternate to unilateral to opposite, straight to curved,, antrorse to subantrorse to retrorse, 9.6–12 μm long; stalk cells cylindrical to cuneate, 2.4–3 μm long; head cells ovate to globose, cylindrical to entire, curved, 7.2–9.6 × 4.8–7.2 μm. Phialides mixed with appressoria, alternate to opposite, ampulliform, 9.6–14.4 × 2.4–4.8 μm. Perithecia scattered, flattened-globose in radiating hyphae, up to 180 μm in diameter; ascospores cylindrical, 4-septate, constricted at the septa, 19.2–21.6 × 9.2–12 μm.

Material examined: India, Kerala, Kozhikode,Malabar Wildlife Sanctuary,near Peruvannamuzhi Dam, on leaves of Atlantia sp.(Rutaceae), 23, February, 2013,Lini K. Mathew, (MTCHT 110, holotype).

Fig.  Amazonia atlantiicola (holotype). a Colony with perithecia. b,c Appressoriate mycelium, d Appressoriate mycelia with phialides. e Developing perethecia. f Mature dehisced perithecium. g-i Ascospores.