Zasmidium litseae G.Y. Sun & Wanyu Zhao, 2016

Zhao, Wanyu, Hou, Yanmin, Bai, Jingke, Zhang, Wei, Gao, Liu, Zhang, Rong, Gleason, Mark L. & Sun, Guangyu, 2016, A new species of Zasmidium associated with sooty blotch and flyspeck, Phytotaxa 258 (2), pp. 190-194 : 191-192

Zasmidium litseae G.Y. Sun & Wanyu Zhao , sp. nov. ( Fig. 2 ) MycoBank MB 812971

Etymology— Named after its host genus.

Mycelium consisting of septate, branched, 1.06–3.16 μm diam. hyphae. Conidiophores lateral on mycelium, solitary, erect, unbranched, straight to somewhat flexuous, subcylindrical, 27.36–59.45 × 2.03–3.09 μm, 0–5-septate. Conidiogenous cells integrated, terminal, subcylindrical, unbranched, but apex frequently swollen, straight or once geniculate, with one to several conidiogenous loci, proliferating sympodially. Conidia ellipsoidal, subcylindrical or fusiform, straight to somewhat flexuous, apex obtusely rounded, base truncate, 0–2-septate, 4.20–16.72 × 1.61–2.76 μm.

Cultural characteristics— On PDA convex, margin entire, with moderate aerial mycelium, reaching 19 mm diam. after 2 weeks.

Mycelial type— Discrete speck.

Holotype — CHINA. Guangxi Province: Beihai City , 21°27’26”N, 109°3’37”E, on the petiole of Litsea glutinosa (Lour.) C.B. Rob, Oct. 2013 , Wanyu Zhao and Liu Gao, HMAS 246718 (=ZWY137) (dried culture), ex-type CGMCC3.17701 (=ZWY137).

Notes— Zasmidium litseae clusters close to Z. syzygii phylogenetically, but they are distinct in morphology. Z. litseae has shorter conidiophores and conidia, and its conidia have fewer septa. The conidiogenous cells of Z. syzygii taper apically towards a rounded or flattened apex, whereas the conidiogenous cells of Z. litseae are often swollen and geniculate towards the apex.

Figures

FIGURE 2. Zasmidium litseae (CGMCC3.17701). a. Signs on petiole of Litsea glutinosa. b. Colony on PDA. c−h. Conidiophores and conidia. Scale bars = 5 μm