Phaeobotryon fraxini Y. Y. Wu & C. M. Tian 2024
- Dataset
- New species and records of Botryosphaeriales (Dothideomycetes) associated with tree dieback in Beijing, China
- Rank
- SPECIES
- Published in
- Wu, Yingying, Peng, Cheng, Yuan, Rong, Zhang, Mingwei, Hu, Yang, Tian, Chengming (2024): New species and records of Botryosphaeriales (Dothideomycetes) associated with tree dieback in Beijing, China. MycoKeys 106: 225-250, DOI: 10.3897/mycokeys.106.122890
Classification
- kingdom
- Fungi
- phylum
- Ascomycota
- class
- Dothideomycetes
- order
- Botryosphaeriales
- family
- Aplosporellaceae
- genus
- Phaeobotryon
- species
- Phaeobotryon fraxini
description
Culture characters. Colonies on PDA with aerial gray-white mycelium, thick and dark black at the edge, thin and paler in color in the center, fluffly, entire margin, reverse with black pigment accumulation, reaching 60 mm diam in 7 days at 25 ° C.
description
Description. Sexual morph: Not observed. Asexual morph: Conidiomata pycnidial, scattered, occasionally aggregated, superficial or immersed, globose, dark brown to black, unilocular, 200 – 360 μm diam. Disc inconspicuous. Ostioles single, brown or black, circular, central, papillate, 40 – 85 μm diam. Locules single, globose, 100 – 170 μm, Conidiophores reduced to conidiogenous cells. Conidiogenous cells hyaline, smooth, thin-walled, holoblastic, cylindrical, formed from the cells lining the inner walls of the locules, 7.0 – 14.0 × 1.0 – 5.0 μm (av. ± S. D. = 10.6 ± 2.0 × 3.1 ± 0.8 µm). Conidia initially hyaline, smooth, thin-walled, then gradually producing light yellow pigment, becoming yellow or light brown, occasionally with bubbles, mature with 1 - septate, brownish yellow to dark brown, oblong, obtuse, rounded at both ends, 13.0 – 20.0 × 7.0 – 10.0 μm (av. ± S. D. = 17.6 ± 1.3 × 8.7 ± 0.7 µm).
description
Fig. 6
etymology
Etymology. Named after the host, Fraxinus chinensis.