Xylariales » Xylariaceae » Whalleya

Whalleya microplaca

Whalleya microplaca (Berk. & M.A. Curtis) J.D. Rogers, Y.M. Ju & F. San Martín, Mycotaxon 64: 48 (1997)

Index Fungorum number: IF437284         Facesoffungi number: FoF03015


Sexual morph: Stromata applanate, solitary or confluent, bipartite, outer dehiscing layer dark brown, thin, exposing mature black surface, carbonaceous. Ascomata globose, 100–120 μm high, 213–245 μm diameter, tissue between ascomata mainly composed of fungal tissue, coriaceous, becoming brownish, tissue below the ascomatal layer inconspicuous. Ostioles umbilicate. Asci 8-spored, 33–38 × 2–3 μm, unitunicate, cylindrical, short-pedicellate, with discoid ring. Ascospores 8–9 × 2–3 μm, uniseriate, light brown, ellipsoid-inequilateral, with narrowly rounded ends, 1-celled, with central prominent guttule. Asexual morph: Undetermined.


Culture characteristics: colonies on PDA white, covering entire plate in 14 days at 28 °C fluffy mycelium, and reverse white.


Known distribution: China, Yunnan, Mauritius, Louisiana, Florida, New Jersey, Philippines, and Taiwan (Farr & Rossman 2020), China.


Known hosts: Phoebe spp., Magnolia glauca, Melia sp., Persea sp., Sassafras albidum, Sassafras officinale (Farr & Rossman 2020), Phoebe spp.


Material examined: China, Yunnan, on woody litter of Phoebe spp. (Lauraceae), 5 December 2018, D.N Wanasinghe, DW0122 (JZBH 3400001) living culture, JZB 3400001.


GenBank Accession No: ITS: MN989425.


Notes: Whalleya is typified by W. microplaca and has sexual morph characters similar to Lopadostoma pouzarii (Daranagama et al. 2018). A collection obtained from the woody litter of Phoebe spp. was identified as Whalleya microplaca with support from morphology and phylogeny. Our isolate clustered with the reference strain of Whalleya microplaca, in the combined ITS, LSU and RPB2 sequence analysis with 100% support. This is the first record of Whalleya microplaca species reported from Phoebe sp. in China.