Amazonia atlantiicola Lini K. Mathew & Neeta N. Nair, [as ‘atlantiicola’], in Mathew, Nair & Swapna, Stud. Fung. 2(1): 15 (2016)

Index Fungorum number: IF 633865; ; Facesoffungi number: FoF 03249

Etymology – Name after the host

Holotype – MTCHT 110

Colonies amphigenous, mostly epiphyllous, sub dense, velvety, up to 2 mm in diameter, confluent. Hyphae straight to sub straight, 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. 1 – Amazonia atlantiicola (holotype). a Colony with perithecia. b,c Appressoriate mycelium, d Appressoriate mycelia with phialides. e Developing perithecia. f Mature dehisced perithecium. g–i Ascospores.