Heterotruncatella spartii

Heterotruncatella spartii (Senan., Camporesi & K.D. Hyde) F. Liu, L. Cai & Crous, in Liu, Bonthond, Groenewald, Cai & Crous, Stud. Mycol. 92: 343 (2018) [2019]

Basionym: Truncatella spartii Senan., Camporesi & K.D. Hyde, in Senanayake et al., Fungal Diversity 73: 91 (2015) (see Tibpromma et al. 2017)

Index Fungorum number: IF 828362; Facesofungi number: FoF 00685

Description is taken from (Tibpromma et al. 2017). Saprobic on cone of Piceae sp., appearing as black, irregular lesions on the host surface. Sexual morph: See Senanayake et al. (2015). Asexual morph: Conidiomata (240–)320–370(–433) μm diam., 160–200 μm, (x̄ = 340 × 180 μm, n = 8), pycnidial or acervular, semi-immersed to superficial, becoming erumpent at maturity, globose with a flattened base, solitary to aggregated, black. Conidiomata wall consisting of outer light brown to hyaline cells of textura angularis and inner hyaline cells of textura angularis to textura globulosa. Conidiophores 2.5–4 μm long, hyaline, cylindrical, simple or branched. Conidiogenous cells 8.5–14.2 μm long hyaline, simple, filiform, annelidic, indeterminate, integrated. Conidia 17.5–24.8 × 5.3–7.2 μm (x̄ = 21.5 × 6.5 lm, n = 30), broadly fusiform, 3-septate, slightly constricted at the mid septum, verruculose, median cells brown to yellowish-brown, 10.5–15 μm long, thick-walled, globules present, basal cell hyaline, conical tapering towards the base with an acute apex, apical cell hyaline, bearing 3 appendages. Appendages 10–13.5 μm long, hyaline, simple, filiform, similar in length or shorter than conidia. Sexual morph: see Senanayake et al. (2015).

Culture characteristics: On PDA, slow-growing, attaining 15 mm in 7 days at 18 °C, circular, margin serrate, from above white, reverse greyish-white.

Material examined: ITALY, Province of Forlı`-Cesena [FC], near Camposonaldo—Santa Sofia, on dead cone attached to Picea excelsa (Pinaceae), 6 May 2013, Camporesi Erio, IT1226 (HKAS96302, new host record), living culture KUMCC 15-0127.

GenBank: ITS: KY 474383

Notes: Truncatella spartii was introduced by Senanayake et al. (2015) on Spartium junceum from Italy. According to phylogenetic analyses of Liu et al. (2019) Truncatella spartii belonged to the new genus Heterotruncatella. Liu et al. (2019) provided a new combination as Heterotruncatella spartii. Liu et al. (2019) re-described the asexual morph.