Dothiorella symphoricarpicola W.J. Li, Jian K. Liu & K.D. Hyde [as ‘symphoricarposicola‘], in Li, Liu, Bhat, Camporesi, Xu & Hyde, Cryptog. Mycol. 35(3): 265 (2014)
Index Fungorum number: IF 626423; Facesoffungi number: FoF 00024
Etymology – Referring to the host on which the fungus was found.
Saprobic on dead bark of Symphoricarpos sp., forming conspicuous, rounded, black papillate conidiomata. Sexual state: Unknown. Asexual state: Conidiomata 200-250 µm diam., 250-300 µm high, submerged in the substrate, solitary, immersed to semi-immersed or partially erumpent at maturity, pyriform, black, ostiolate (Fig. 2d). Ostiole 30-70 µm diam., single, central, with a well-developed neck, thick-walled, sometimes papillate (Fig. 2e). Peridium 30-50 µm wide, composed of 6-7-layers, with outer 3-4-layers brown and inner 1-2-layers hyaline, composed of thick-walled cells of textura angularis (Fig. 2c). Conidiophores reduced to conidiogenous cells, arising from all around the basal region of the conidioma. Conidiogenous cells 4-12 µm long × 1.5-6 µm wide, cylindrical, sometimes slightly curved, phialidic, hyaline, thick and smooth-walled (Fig. 2f-j). Conidia 14-20 × 6.5-9 µm (› = 17 × 8 µm; n = 20), ovoid, rounded at both ends, guttulate, initially hyaline and aseptate, becoming pigmented brown and 1-septate at maturity, slightly curved, smooth-walled (Fig. 2l-n).
Culture characters – Culture on PDA: Colonies fast-growing, reaching 50 mm diam. after 4 d at 20-25C, circular, white in first few days, the center becoming grey to green-grey after one week, and finally black after two weeks, flattened, felt-like, sparse, aerial, surface smooth with crenate edge, filamentous.
Material examined – ITALY. Forlì-Cesena [FC], Berleta-Santa Sofia, on dead bark of Symphoricarpos sp., 18 May 2013, Erio Camporesi, IT-1075 (MFLU 14-0217, holotype); ex-type cultures = MFLUCC 13-0497 = MUCL and MFLUCC 13-0498 = MUCL. ibid. Forlì-Cesena [FC], Spinello-Santa Sofia, on dead bark of Symphoricarpos sp., 28 June 2013, Erio Camporesi, IT-1075A (MFLU 14-0297, paratype).
Fig. 2. Dothiorella symphoricarposicola (Holotype: MFLU 14-0217). a-b. Black conidiomata on the host surface. c. Section of peridium. d. Vertical section of conidioma. e. Ostiole. f-j. Conidiogenous cells and developing conidia. k. Germinating spore. l-n. Conidia. o-p. Culture on PDA (note o reverse). Scale bars a-b = 200 µm, c = 20 µm. d = 100 µm. e = 50 µm. f-j = 5 µm. k = 5 µm. l-n = 5 µm. o-p = 25 mm.