Camposporium appendiculatum 2020

Camposporium appendiculatum D.F. Bao, Z.L. Luo, K.D. Hyde & H.Y. Su 2020

Index Fungorum number: IF557026; Facesoffungi number: FoF 07064

Holotype: CHINA, Yunnan Province, saprobic on submerged decaying wood in Lancang River, December 2016, Z.L. Luo, 2L H 6–3–2, S-1234 (DLU 1234, holotype), ex-type living culture, DLUCC 1234.

Morphological description

Sexual morph Undetermined. Asexual morph Colonies on substratum effuse, superficial, black. Mycelium immersed, composed of brown, branched, smooth hyphae. Conidiophores micronematous, mononematous, very short, simple, unbranched, flexuous, pale brown to subhyaline, smooth. Conidiogenous cells mono- or polyblastic, terminal, integrated, denticulate, subhyaline. Conidia 107–119 μm long ( ^x̄ = 113.2 μm, SD = 6.1, n = 30), 9.5–11.5 μm wide ( ^x̄ = 10.4 μm, SD = 1, n = 30), solitary, cylindrical, elongate, 10–13-septate, pale brown at middle cells, hyaline at both the end cells, truncate at both of ends, the apex with a filiform, septate, hyaline apical appendage, 72–114 μm long ( ^x̄ = 107.8 μm, SD = 35.9, n = 25), 3.5–4.8 μm wide ( ^x̄ = 4.2 μm, SD = 0.6, n = 25), smooth.Culture characteristics: Conidia germinating on PDA within 24 h. Colonies on PDA at room temperature reaching 2.5 cm diam. in 3 weeks, mycelium pale brown to greyish brown after 3 weeks, composed of pale brown to brown, septate, smooth hyphae.

Habitat: submerged decaying wood in freshwater.

Distribution:China.

GenBank Accession: ITS：MN758890；LSU：MN759021,；SSU：MN758956；TEF1-α：MN784094.

Notes: Fusiconidium lycopodiellae was introduced by Crous et al. (2018b) and was collected from Germany on stems of Lycopodiella inundata. Crous et al. (2018b) mentioned that this species is reminiscent of Clasterosporium but it lacks hyphopodia. Based on LSU sequence data F. lycopodiellae allied with Fusiconidium, but it also lacks percurrent proliferation of the conidiogenous cells and fusoid to ellipsoid conidia. Therefore Crous et al. (2018b) tentatively named their collection as Fusiconidium.

Reference: Kevin D. Hyde1,5,8,22 · Yang Dong2,3 · Rungtiwa Phookamsak1,5,6,7 et al.

Camposporium appendiculatum (DLU 1234, holotype). a Appearance of the fungus on wood. b–k Conidia. l Conidiophores. m Germinating conidium. Scale bars: b=50 μm, c–m=30 μm