Neofusicoccum parvum (Pennycook & Samuels) Crous, Slippers & A.J.L. Phillips, in Crous, Slippers, Wingfield, Rheeder, Marasas, Phillips, Alves, Burgess, Barber & Groenewald, Stud. Mycol. 55: 248 (2006)
Index Fungorum number: IF 500879; Facesofungi number: FoF 02411
Saprotrophic on dead and aerial branches of Vitis vinifera. Sexual morph: Not observed (see Philips et al. 2013 for a description). Asexual morph: Conidiomata 210–290 μm diam., globose and apapillate to pyriform with a short, acute papilla, entire locule lined with conidiogenous cells. Conidiogenous cells 7–25 × 2–4 μm (x̄ =15 × 3 μm, n = 20), holoblastic, hyaline, subcylindrical, proliferating percurrently to form 1–2 annellations, or proliferating at the same level to form periclinal thickenings. Conidia 12–23 × 4–6 μm (x̄ = 15 × 3 μm, n = 30), ellipsoidal with apex round and base flat, unicellular, hyaline, old conidia becoming 1–2-septate, hyaline, or light brown with the middle cell darker than the end cells.
Cultural characteristics: Colonies on PDA reaching 80 mm diam. in 5 days at 25° C. Mycelium white, flat and dense, becoming light iron-grey after 14 days, with entire margin with slightly undulate edge
Material examined: ITALY, Province of Forlì-Cesena, Trivella di Predappio, on dead and aerial branch of Vitis vinifera (Vitaceae), 9 December 2015, Erio Camporesi IT 2726 (MFLU 16-0648); culture, MFLUCC 17-1254.
Notes: Neofusicoccum parvum has a wide host range and a wide distribution. This species is an important pathogen of grapevine causing Botryosphaeria die back in many grape growing regions in the world (Philips et al. 2013).