Fungalpedia – Note 3091, Pleiocarpon
Pleiocarpon L. Lombard & D. Aiello, in Aiello et al., IMA Fungus 8(1): 73 (2017).
Citation when using this data: Perera RH et al. 2023 – Fungalpedia.
Index Fungorum, Facesoffungi, MycoBank, GenBank.
Classification: Nectriaceae, Hypocreales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota , Fungi.
Plant pathogenic, some are lichenicolous. Sexual morph: Ascomata perithecial, solitary or gregarious, astromatic, superficial, tightly attached to the substrate, widely obpyriform to subglobose, not collapsing or laterally pinched upon drying, reddish orange to dark red, KOH+ purple, LA+ yellow, surface rugose. Ascomatal apex discoid, flattened, somewhat constricted beneath the disc. Peridium composed of two intergrading strata. Paraphyses lacking. Asci 8-spored, short-stipitate, cylindrical to narrowly clavate, apex with a thin slightly refractive disc. Ascospores obliquely uniseriate or biseriate above and uniseriate below, ellipsoidal, 1-septate, not to somewhat constricted at septum, hyaline, echinulate. Asexual morph: Conidiophores simple or branched, or aggregated to form sporodochia; simple conidiophores arising laterally or terminally from aerial hyphae, solitary to loosely aggregated, unbranched or sparsely branched, septate, producing up to three conidiogenous cells. Conidiogenous cells monophialidic, cylindrical, tapering slightly to the apex. Microconidia abundant, aseptate, ellipsoid to ovoid or subcylindrical, straight to slightly curved, with or without a clearly laterally displaced hilum, hyaline, smooth-walled. Macroconidia cylindrical to subcylindrical, straight to curved, 1−6-septate, apex or apical cell typically slightly bent to one side and minutely beaked, base with sometimes visible, centrally located or laterally displaced hilum, hyaline, smooth-walled. Chlamydospores absent or abundant, when present occur singly or in chains, globose to subglobose, hyaline or pale brown or brown (adapted from Aiello et al. 2017).
Known distribution: Italy (Aiello et al. 2017, 2020), Algeria (Aigoun-Mouhous et al. 2019), French Guiana (Lechat and Fournier 2019b), Sri Lanka (Marin-Felix et al. 2019)
Notes: Aiello et al. (2017) introduced Pleiocarpon for P. strelitziae, a cylindrocarpon-like species causing basal rot of Strelitzia reginae. Later another three species were added to the genus including one lichenicolous fungus (Aigoun-Mouhous et al. 2019; Lechat and Fournier 2019b; Marin-Felix et al. 2019). Lechat and Fournier (2019b) described the sexual morph of the genus. In the current study Pleiocarpon showed close phylogenetic affinities to Thelonectria (Perera RH et al. 2023).
Type species: Pleiocarpon strelitziae L. Lombard & D. Aiello, in Aiello, Polizzi, Crous & Lombard, IMA Fungus 8(1): 73 (2017).
Other accepted species: Species Fungorum – search Pleiocarpon.
References
Entry by
Perera RH, Guizhou Key Laboratory of Agricultural Biotechnology, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou 550006, P. R. China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand, Mushroom Research Foundation, 128 M.3 Ban Pa Deng T. Pa Pae, A. Mae Taeng, Chiang Mai 50150, Thailand.
Published online 4 September 2026