Torula masonii P. W. Crous

Torula masonii P. W. Crous View in CoL , IMA Fungus 6 (1): 192 (2015)

Fig. 5 View Figure 5

Description.

Saprobic on dead branches of Gardenia jasminoides J. Ellis ( Rubiaceae ). Sexual morph: Undetermined. Asexual morph: Hyphomycetous. Colonies effuse on the natural substrate, scattered, hairy, velvety, dark brown to black. Mycelium immersed or superficial, composed of septate, branched, dark brown to black hyphae. Conidiophores 2–4 µm wide, macronematous to semi-macronematous, septate, erect, straight or slightly flexuous, brown to dark brown, subcylindrical to subglobose, thick-walled, with 1–2 doliiform to globose cells. Conidiogenous cells 6–9 × 5–8 µm ( x ̄ = 7.5 × 6.5 μm, n = 20), polyblastic, terminal or intercalary, dark brown to black, doliiform to subglobose, smooth to verruculose, thick-walled. Conidia 20–60 × 4–9 μm ( x ̄ = 36 × 6 μm, n = 30), phragmosporous, catenated, acrogenous, minutely verruculose, rounded at both ends, composed of subglobose cells, dark brown to black, 1–2 smaller cells at the apex, 3–18 - septate, easily separating, slightly constricted at some septa, and chiefly subcylindrical.

Culture characteristics.

Conidia germinated on the PDA within 24 h, and germ tubes are produced from the basal cell. Colonies growing on PDA reached 33–35 mm in diam. after three weeks at 25 ° C in the dark. Colonies from above medium dense, regular, white aerial mycelium slightly raised, fluffy, filiform. In reverse, greenish-grey in the center, off-white ring at the margin, without pigments produced in PDA.

Material examined.

China • Sichuan Province, Guangyuan City, Qingquan Town , 32°41'35"N, 105°58'39"E, elevation 817 m, on dead branches of Gardenia jasminoides ( Rubiaceae ). 20 April 2021, H. Z. Du, L 2092 ( GZAAS 25-0020 ), living culture GZCC 25-0020 GoogleMaps .

Notes.

Crous et al. (2015) introduced Torula masonii , which was collected from Brassica sp. in the UK. Subsequently, Li et al. (2017) and Su et al. (2018) recollected and described T. masonii from Iris germanica in Italy and submerged decaying wood in China, respectively. In this study, multi-locus phylogenetic analysis showed that our isolate ( GZCC 25-0020 ) clustered together with T. masonii ex-type ( CBS 245.57 ) with 87 % MLBS and 0.98 BIPP support (Fig. 1 View Figure 1 ). Additionally, our collection ( GZAAS 25-0020 ) shows similar morphological characteristics to T. masonii ( CBS H-22278 ). Therefore, we identified our new collection as T. masonii , which is associated with the medicinal plant Gardenia jasminoides in Sichuan Province, China.