Pleosporales » Periconiaceae » Periconia

Periconia palmicola

Periconia palmicola J.F. Li & Phookamsak, in Hyde et al., Fungal Diversity 100: 93 (2020)

Index Fungorum number: IF556889         Facesoffungi number: FoF07053


Sexual morph: Undetermined. Asexual morph: Colonies on the substratum superficial, numerous, effuse, black, floccose. Mycelium immersed on the substrate, composed of septate, branched, smooth, dark hyphae. Conidiophores 151–188 μm long × 5.6–8 μm wide (= 175.4 × 6.8 μm, n = 10), macronematous, mononematous, septate, partly forming sphaerical heads and branched at apex, erect, mostly slightly flexuous to curved, dark brown to black. Conidiogenous cells 3–3.5 μm long × 3–4.8 μm wide ( = 3.2 × 4 μm, n = 10), mono- to polyblastic, discrete, terminal, globose, hyaline to subhyaline. Conidia 5.1–7.4 μm long × 4.8–6.1 μm wide (= 6.2 × 5.5 μm, n = 20), solitary to catenate, in acropetal chains, subglobose to globose, light brown to brown, verruculose.


Culture characteristics: Colonies on PDA, reaching 30–32 mm diam. after 3 weeks at room temperature (20–30 ºC). Colony dense, circular, flattened to slightly raised, surface rough, radially furrowed at the centre, smooth at the margin, with edge entire, velvety; from above, greyish green at the margin, pale yellowish to yellowish green at the centre; from below, dark green to greenish grey; not producing pigmentation on agar medium.


Culture characteristics: Conidia germinating on PDA within 14 h and germ tubes produced from top cells. Colonies growing on PDA, hairy or cottony, white to grey, reaching 5 mm in 20 days at 25 °C, mycelium superficial, effuse, radially striate, with regular edge, sub-hyaline to pale white hyphae; Asexual spores and sexual spores were not formed within two months.


Material examined: THAILAND, Chiang Rai Province, Mae Fah Luang University, Herb Garden, on dead fallen leaves of palm, 28 December 2013, J.F. Li, H-13 (MFLU 14-0198, holotype), ex-type living culture MFLUCC14-0400.


GenBank Accession No: LSU: MN648327, SSU: MN648319.


Notes: Periconia palmicola is described herein as a new species. Periconia palmicola is unique in its colourless conidiogenous cells and dark conidiophores. In the phylogenetic analyses of combined ITS, LSU and TEF1-α, P. palmicola formed an independent subclade to P. digitata (77% ML, 0.98 BYPP). Therefore, P. palmicola is established as a new species.

Figure X. Periconia palmicola (MFLU 14-0198, holotype). a Appearance of fungal colonies on host substrate. b Conidiophores. c–e Close up conidiophores attached with conidiogenous cells. f–h Conidiogenous cells. i–l Conidia. m Germinated conidia. Scale bars: a = 100 μm, c–e = 20 μm, b, m = 10 μm, f–h = 5 μm, i–l = 2 μm.



: Hyde KD, Dong Y, Phookamsak R, Jeewon R et al. (2020) Fungal diversity notes 1151–1276: taxonomic and phylogenetic contributions on genera and species of fungal taxa. Fungal Diversity (2020) 100:5–277.


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