Foliocryphia eucalypti Cheew. & Crous, Persoonia 23: 65 (2009).
Pathogenic on woody bark. Sexual morph: Undetermined. Asexual morph: Stromata effuse, yellowish brown, with dark greybrown margin, producing numerous umber to dark brown or fuscous-black conidiomata. Mycelium 1.5–2.3 μm wide, mostly immersed, aerial mycelium sparse, whitish. Conidiomata 300–370 × 320–590 μm, eustromatic, amphigenous on leaf, separate, sub superficial, pulvinate, subglobose to horizontally broadly ellipsoid, with or without ostiole; stromatic tissue of textura angularis, pale to medium brown, somewhat darker and thicker walled at the outer region; covered with pale brown mycelium as outer layer; conidiomata with convoluted inner surface, occasionally multilocular. Conidiophores 7–16 × 3–4.5 μm, consisting of basal subglobular to angular cells, formed from the inner cells of the locular walls, hyaline to medium brown, slightly thick-walled, irregularly branched, transversely septate, forming cylindrical cells. Conidiogenous cells 12–15 × 3–4 μm, enteroblastic, determinate, integrated or discrete, phialidic, cylindrical, tapering to a narrowly cylindrical part in the apical region, collarette tubular, with visible periclinal thickening. Conidia 9–10 × 3–4.5 μm, hyaline, aseptate, ellipsoid, straight to irregularly curved, apex obtuse, base abruptly tapered to a flat protruding scar, which can be basal or somewhat off-center, smooth, thin-walled (description based on Cheewangkoon et al. 2009).
Notes: Foliocryphia was introduced and typified by Foliocryphia eucalypti. This genus is characterized by aseptate conidia in eustromatic conidiomata; stromata do not turn purple in 3% KOH, or yellow in lactic acid. DNA phylogeny confirmed Foliocryphia as a distinct genus in
Fig. Foliocryphia eucalypti (redrawn from Cheewangkoon et al. 2009). a Pycnidia on culture media. b Cross section of conidioma. c Conidiophores and conidiogenous cells. d conidia. Scale bars: a = 500 μm, b = 100 μm, c, d = 10 μm.
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