Calonectria auriculiformis N.Q. Pham, T.Q. Pham & M.J. Wingf., Mycologia 111(1): 85 (2019) Fig. 2
MycoBank number: MB 825527; Index Fungorum number: IF 825527; Facesoffungi number: FoF 11339;
Micromorphology: Associated with leaf spot of Eucalyptus sp. Telemorph: not observed. Anamorph: Macroconidiophores septate, hyaline. Primary branches of conidiogenous apparatus 10–30 × 3–10 μm; secondary branches aseptate, 10–25 × 3–8 μm; third branches 10–16 × 3–8 μm; tertiary branches 10–15 × 3–8 μm; each terminal branch producing 2–4 phialides, 10–20 × 3–6 μm. Veslcles 5–13 μm diam, ellipsoidal to obpyriform. Macroconidia (38–)40–43(–47) × (3–)4–6 (–7) μm (x̄ = 41.5 × 5 μm, n=50), cylindrical, straight, 1 septate. Megaconidia and microconidia not observed.
Culture characteristics: Colonies on MEA fast growing at 25 ℃, growth rate 9.5 mm/d (n = 5), circular, with regular margin, producing white aerial mycelium; reverse umber.
Material examined: China, Guangdong province, Guangzhou city, Eucalyptus sp. L.Herit, (Myrtaceae), 11th July 2020, C.T. Chen (dried cultures ZHKU 21-0050 and ZHKU 21-51), and living culture, ZHKUCC 21-0053 and ZHKUCC 21-0054.
Notes: In the phylogenetic tree, two isolates from our study were closed to Calonectria auriculiformis with 99 % in ML, and 0.98 % in BYPP support. Morphologically, our isolates are similar to Ca. auriculiformis described by Pham et al. (2019)..
Figure 2. Calonectria auriculiformis (ZHKUCC 21-0053: New host record) a–b: Culture characteristics on MEA after 7 days (a, upper view; b, reverse view); c: Macroconidiophores; d–f: Conidiogenous apparatus; g–k: Vesicles; l–o: Macroconidia; Scale bars: c–o = 10 μm.