Fungalpedia – Note 2234, Piedraia
Piedraia Fonseca & Leão
Citation when using this data: Hongsanan S et al. 2020 – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank
Classification: Piedraiaceae, Capnodiales, Dothideomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi
The genus causes disease of human hair. Two species are accepted P. hortae and P. quintailhae. Piedraia quintanilhae differs from P. hortae in having ascospores without appendages. Piedraia is also commonly found in soil, stagnant water and crops as dematiaceous filamentous fungi.
Type species: Piedraia hortae Fonseca & Leão.
Other accepted species: Species Fungorum – search Piedraia.
Figure 1 – Piedraia hortae (redrawn from Viegas 1943). a Stroma on human hair. b Vertical section through ascoma. c Hypha on the culture. d Ascospores. e Peripilar nodules grown on hypha on culture. Scale bars: a–e = 20 μm.
Entry by
Sinang Hongsanan, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Science and Oceanography, Shenzhen University, Shenzhen 518060, People’s Republic of China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50002, Thailand
Published online 25 March 2026