Fungalpedia – Note 2898, Pseudophaeoisaria
Pseudophaeoisaria Diederich & Giavarini.
Citation when using this data: Meng QF et al. – Fungalpedia.
Index Fungorum, Faceoffungi, MycoBank, GenBank, Fig 1.
Classification: Ascomycota genera incertae sedis, Fungi.
Pseudophaeoisaria was introduced by Diederich et al. (2024) to accommodate the type species P. cladoniae. The genus is characterized by synnematous, non-gelatinous conidiomata with a pale to medium greyish-brown stipe and a slightly velvety capitulum. Stipe hyphae are brown, K+ olivaceous, parallel, septate, and smooth. The mycelium is immersed, with conidiophores not distinct from stipe hyphae. Conidiogenous cells are integrated, terminal, hyaline, sometimes short-branched, sympodial, denticulate. Conidia are dry, aseptate, subspherical to short-ellipsoidal, often catenate in groups of 2–3, medium brown, K+ olivaceous brown and smooth walls. Due to the lack of molecular data, this genus is tentatively placed within Ascomycota genera incertae sedis (Hyde et al. 2024).
Type species: Pseudophaeoisaria cladoniae Diederich & Giavarini, on Cladonia polydactyla. (Diederich et al. 2024).
Other accepted species: Species Fungorum – search Pseudophaeoisaria.
Figure 1 – Patriciomyces valentinianus re-edited from (Diederich et al. 2024). a Synnemata over the thallus of Cladonia polydactyla. b, c Conidiophores and conidia. d Conidia. Scale bars: a = 500 μm, b, c = 10 μm, d = 5 μm.
References
Entry by
Meng QF, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, 57100, Thailand and School of Public Health, Zunyi Medical University, Guizhou 563000, China.
Published online 5 August 2026