<i>Colletotrichum mexicanus</i> A.S. Pérez-Méndez, M.J. Yáñez-Morales &amp; A.J. Hernández sp. nov.

Sexual morph not observed. Asexual morph on 2% potato dextrose agar medium (PDA). Vegetative hyphae 2–6 μm diam, hyaline to brownish, smooth-walled, septate, branched. Conidiomata acervular. Setae moderately observed, medium-brown, some setae pale brown toward the tip and base, smooth-walled and thick-walled, 40–109 μm long, 1–3(–4)-septate, base rarely inflated, 4–7 μm diam, tip rounded and rarely producing a conidium. Conidiogenous cells hyaline, smooth-walled, cylindrical, 10–22(–29) × 2–4 μm, opening 1 μm diam. Conidia hyaline, smooth-walled, aseptate, straight, oblong to cylindrical, apex rounded and base slightly narrowing to truncate hilum, hilum sometimes slightly visible, cytoplasm guttulate, often with two large polar guttules, sometimes also one in the centre, or guttules dispersed along the cytoplasm, 15–20(–29) × 4–6(–7) μm (mean ± SD = 17 × 5 µm ± 1.5 × 0.7), L/W ratio = 3.5. Appressoria (on slide culture from conidia) single, pale brown and medium brown, subglobose, ellipsoid, clavate, with entire or slightly undulate margin, (7–)9–17 × 5–8 μm in 5 d (mean ± DS = 12 ± 3.1 × 6 ± 0.9).