Holocryphia eucalypti (M. Venter & M.J. Wingf.) Gryzenh. & M.J. Wingf., in Gryzenhout et al., Stud. Mycol. 55: 48 (2006b).
Pathogenic forming bark cankers. Sexual morph: Stromata surface as black ostioles in papillae covered with orange stromatal tissue. Asci 30–45 × 8–11 μm (x̅ = 42 × 9.5 μm, n = 20), fusiform, floating freely in the perithecial cavity, unitunicate with nonamyloid, refractive apical rings. Ascospores 9–14 × 2–3 μm (x̅ = 12 × 2.7 μm, n = 20), cylindrical, occasionally allantoid, hyaline, aseptate. Asexual morph: Stromata erumpent, semi-immersed, pulvinate, orange, uni- to multilocular and convoluted, locules often occurring in same stroma that contains perithecia. Conidiophores cylindrical with or without inflated bases, tapering, often septate with or without lateral branches beneath a septum, hyaline, paraphyses occurring between conidiophores. Conidiogenous cells phialidic. Conidia hyaline, cylindrical, aseptate, expelled through an opening at the stromatal surface as orange droplets or tendrils (description based on Gryzenhout et al. 2006b).
Material examined: SOUTH AFRICA, Nyalazi, near Mtubatuba, KwaZula-Natal, on Eucalyptus sp., Gryzenhout M., 25 February 1998, PREM 56211, holotype.
Notes: Holocryphia eucalypti is an opportunistic canker pathogen of Eucalyptus and Corymbia species (Chen et al. 2013).
Fig. Holocryphia eucalypti (PREM 56211). a Packet of herbarium. b Herbarium specimen. c Ascostromata on substrate. d, e Cross section of ascostromata. f–i Asci. j Paraphyses. k–n ascospores. Scale bars: d = 100 μm, e = 50 μm, f–i = 20 μm, j–n = 5 μm.