M.C. Dayarathne, Jones E.B.G. & K.D. Hyde
Habitat: Saprobic on bark of Rhizophora sp. submerged in marine water.
Ascomata: Hysterothecioid, subglobose to globose in vertical section, solitary to gregarious, erumpent to superficial with base immersed, straight to flexuous, ellipsoid or elongated with pointed ends, opening by a depressed longitudinal slit.
Peridium: Consisting of three layers, up to 25 µm in diameter, carbonaceous, outer layer dark, inner layer hyaline, compressed, middle layer consisting of 1–2 rows of thick-walled, brown cells.
Pseudoparaphyses: Cellular, hyaline, septate, flexuous, branched, 1–2 µm wide.
Asci: 63–87 x 8–10 µm, bitunicate, cylindric to claviform, stipitate, octosporous, biseriate.
Ascospores: (14–)16(–18) x (4–)5(–6) µm (x̅ =16 x 5 µm), ellipsoid, slightly curved, light brown, the end cells are rarely paler than the centre cells, biseriate, with 3 transverse septa, often slightly constricted at medium septum.
Culture: Colonies on PDA at 25–28 °C reaching 5 cm in 7days, whitish, zonate with diffuse margins, reverse at first whitish and turning light brown after 3–4 days.
Fig. 1 Halorosellinia rhizophorae (holotype MFLU 15-0183) a,b Psudostromata on host. b Horizontal section through pseudostroma. c Section through stromata. d Peridium. e Apical apparatus stained dark blue with Melzer’s reagent. f-h Asci. i Paraphyses. j-m Ascospores. Scale bars: b = 200 μm, c = 100 μm, d,e = 20 μm, f-i = 50 μm, j–m = 20 μm