Pleosporales » Didymellaceae » Neodidymelliopsis

Neodidymelliopsis ranunculi

Neodidymelliopsis ranunculi W.J. Li & K.D. Hyde, in Hyde et al., Fungal Diversity 80: 41 (2016)

Index Fungorum number: IF 552214; Facesofungi number: FoF 02349

Etymology: Named after host genus Ranunculus.

Holotype: MFLU 16-1870.

Saprobic on dead stem of Ranunculus sp., Sexual morph: undetermined. Asexual morph:

Coelomycetes. Conidiomata 100–120 μm high, 95–110 μm diam., pycnidial, solitary, globose to subglobose, black, immersed to semi-immersed, unilocular, ostiolate, wall 14–32 μm wide, composed of dark brown to light brown, thick-walled cells of textura angularis. Ostiole single, short, eccentric. Conidiophores reduced to conidiogenous cells. Conidiogenous cells 3–5 μm long × 4.5–10 μm wide, hyaline, enteroblastic, phialidic, determinate, discrete, doliiform, with a small collarette, smooth, arising from inner layers of conidiomata. Conidia 3–5 × 7.5–10 μm (x̄ = 4.3 × 8.7 μm, n = 30), initially hyaline, becoming pale brown at maturity, ellipsoidal, rounded at both ends or 1-septate, straight or slightly curved, guttulate, smooth-walled.

Culture characteristics:  Colonies on PDA attaining 40–50 mm diam. after 7d at 20–25 °C, margins circular, floccose, white, pale grey to olivaceous near the center; reverse with white margin, dark brown at central zone, sporulating after 4 weeks.

Material examined: ITALY, Province of Forlı`-Cesena [FC], Castrocaro Terme e Terra del Sole, near Converselle, on dead stem of Ranunculus sp. (Ranunculaceae), 2 December 2012, Erio Camporesi, IT-936 (MFLU 16-1870, holotype); ex-type living culture, MFLUCC 13–0490, ICMP; ibid. (KUN, HKAS 95028, isotype), living culture, KUMCC 16-0025.


Notes: Neodidymelliopsis ranunculi fits well within the morphological concept for Neodidymelliopsis. Based on both morphology and phylogeny, N. ranunculi is introduced as a new species in the genus (Hyde et al. 2016).