Madagascaromyces cannae Y.X. Zhang, J.W. Chen & Manawas. sp. nov. (FIGURE 1)
MycoBank number: MB 559623; Index Fungorµm number: IF 559623; Facesoffungi number: FoF 10814;
Etymology: Epithet refers to the host genus from which the fungus was isolated
Holotype: ZHKU 220029
Saprobic on leaf of Canna indica. Sexual morph: not observed. Asexual morph: Conidiophores (18–)20–40(–78) × 2–4(–5) µm (`x = 31 × 3 µm, n=50), 0–4 septate, pale brown. Conidiogenous cells (4–)7–15(–20) × (2–)4–5 µm (`x = 10 × 4 µm, n=50), pale brown, terminal and lateral. Conidia (17–) 30–50 (–70) × 3–5 µm (n=50), pale brown, clavate, guttulate, apex subobtuse, base long obconically subtruncate, 0–6 septa (5 septa not observed), 0–3 septa are mostly, the septa are slightly constricted, some are slightly curved. Spermatogonia forming on OA, 510–770 × 540–770 µm (`x = 648 × 653 µm, n=20), black dots, semi-immersed, globose. Spermatia 2.5–4.5 × 1.5–2 µm (`x = 3 × 2 µm, n=50), smooth, nearly cylindrical.
Cultural characteristics: Colonies on MEA reaching 27 mm diam after one month, flourishes aerial mycelium and smooth, surface white-grey; reverse dark green. Colonies on OA reaching 25 mm diam after one month at 25℃, spreading with moderate aerial mycelium and smooth, surface Brown, reverse olivaceous-grey.
Material examined: CHINA. the Haizhu National Wetland Park, Guangzhou, Guangdong Province, fresh leaves of Canna indica. 4 October 2021, Jieying Lin, (dried culture ZHKU 220029 holotype; ZHKU 220030, ZHKU 220031 paratype), living cultures ZHKUCC 220038 ex-type; ZHKUCC 220039, ZHKUCC 220040 ex-paratype.
FIGURE 1. Madagascaromyces cannae (ZHKU 220029 Holotype): a, b. Specimen observed. c, d. Colonies on MEA at 25 °C (b from the bottom). e. Spermatogonium forming on OA. f. Spermatia. g, h. Conidiophores. i, j. Conidiogenous cells. k–p. Conidia. Scale bars = 10 µm.