Chrysofolia colombiana Crous, Rodas & M.J. Wingf., Persoonia, Mol. Phyl. Evol. Fungi 34: 207 (2015)

Illustration: See Crous et al. (2015)

Pathogenic on leaf spots. Sexual morph: Undetermined. Asexual morph: Conidiomata pycnidial, separate to aggregated, exudes a yellow slimy conidial mass, globose, base immersed, green-brown in lactic acid. Conidiomatal wall 3–6 layers of brown textura angularis. Neck long, with a pale-yellow zone just above the agar surface, which then turns yellow-brown while the apical part is pale yellow to almost subhyaline; neck 100–300 μm long, 50–110 μm diam., attached to the globose base, terminating in an obtusely rounded apex, 20–40 μm diam., with central ostiole surrounded by loose hyphal elements, 1.5–2 μm diam. Conidiophores reduced to conidiogenous cells. Conidiogenous cells 5–8 × 2–3 μm, lining the inner cavity of base, hyaline, smooth, ampulliform, tapering abruptly towards neck, with several apical percurrent proliferations. Paraphyses up to 55 μm long, interspersed among conidiogenous cells, hyaline, smooth, cylindrical, 1–2-septate. Conidia 6–7.5 × 2.5–3 μm, solitary, hyaline, smooth, guttulate, ellipsoid, straight to allantoid, apex obtuse, base with flattened hilum (description based on Crous et al. 2015).

Notes: Chrysofolia is distinct from other genera in Cryphonectriaceae having erumpent conidiomata with bright, yellow-brown furfuraceous margins. Chrysofolia colombiana is commonly associated with serious cankers and leaf spots diseases (Crous et al. 2015).