Pleosporales » Neohendersoniaceae » Medicopsis

Medicopsis chiangmaiensis

Medicopsis chiangmaiensis

Q.J. Shang & K.D. Hyde, Mycosphere 9 (2): 313 (2018)

 

Classification: Ascomycota-Pezizomycotina-Dothideomycetes-Pleosporales- Neohendersoniaceae -Medicopsis

 

Host species: Roystonea regia (Xiong et al. 2025)

 

Known distribution: China (Xiong et al. 2025), Thailand (Hyde et al. 2018).

 

IF Number: IF553978      Mycobank Number: 553978     FOF Number: FoF03875

 

Description

Saprobic on dead petiole of Roystonea regia. Sexual morph Undetermined. Asexual morph Conidiomata 245–265 diam × 95–120 μm high (x̅ = 300 × 110 μm, n = 10), pycnidial, solitary to scattered, immersed to semi-immersed, globose to subglobose, uni- to multiloculate. Peridium 10–20 μm wide, outer layers dark brown to black, inner layers thin-walled, hyaline, composed of cells of textura angularis. Conidiophores reduced to conidiogenous cells. Conidiogenous cells 8–12 × 2–3.5 μm (x̅ = 9.4 × 2.8 μm, n = 25), enteroblastic, phialidic, determinate, cylindrical to subcylindrical, hyaline, smooth-walled. Conidia 4–5 × 2–3 μm (x̅ = 4.8 ×2.6 μm, n = 40), oval to ellipsoid, hyaline, aseptate, straight or slightly bent or irregularly shaped, smooth-walled, with fine granular content.

Culture conditions: Colonies on PDA, reaching 15–18 mm diam. after 21 days at 25 °C, circular, cottony, yellowish white, reverse pale brown.

 

Medicopsis chiangmaiensis (MHZU 24-0505, new host record). a, b Appearance of stroma on host substrate. c Vertical section of pycnidium. d Section of peridium with attached conidia. e, f Conidiogenous cells and developing conidia. g conidia. h Germinated conidium. i Culture on PDA from above and reverse. Scale bars c = 50 μm, d–h = 10 μm.

 

 

Reference

Hyde KD, Chaiwan N, Norphanphoun C, Boonmee S, et al. 2018 – Mycosphere notes 169–224. Mycosphere 9(2), 271–430. https://doi.org/10.5943/mycosphere/9/2/8

Xiong YR, Manawasinghe IS, Ausana Mapook 2025 – Addition to Tropical palm fungi: Ten new Records from China and Thailand. Asian Journal of Mycology

 

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