Lembosia eugeniae (Bat.) Hongsanan & KD Hyde, comb. nov. Index Fungorun: IF550717
≡ Trichamelia eugeniae Bat., in Batista & Garnier, Publções Inst. Micol. Recife 295: 9 (1960).
Epiphytes on the upper surface of leaves, forming blackened irregular areas. Superficial hyphae not obvious, but leaves covered in blackened crust. Sexual state: Thyriothecia superficial on the leaves, easily removed from the host surface, opening with longitudinal dehiscence at the centre, black. Upper wall oval, composed of black cells at the centre. Hamathecium lacking pseudoparaphyses, with asci arranged vertically. Asci 94–103×45–51μm (x = 97×47μm, n=2), 8-spored, bitunicate, oblong to broadly oblong. Ascospores 26–33×12–18μm (x = 29×17μm, n=5), with broad to narrowly rounded ends, brown when mature, 1- septate, constricted at the septum. Asexual state: Unknown.
Material examined: BRAZIL, on leaves of Eugenia malaccensis L., (URM 14301, holotype).
Note: Trichamelia is more typical to Lembosia based on its linear thyriothecia, or X or Y shape, slit-like openings and 1- septate with brown ascospores, and is better synonymized under Lembosia.
Fig. 1 Lembosia eugeniae (holotype). a, b Appearance of thyriothecia on the upper surface of leaf. c Squash mount of thyriothecia in lactic acid. d Squash mount showing thyriothecia margin. e, f Vertical section of thyriothecia in cotton blue reagent. g, j Asci which are easily broken when mature. h, i Ascospores inMelzer’s reagent. Scale bars: b=0.5mm, c–g=100μm, h, i=10μm
