Parameliola dimocarpi Hongsanan & K.D. Hyde, sp. nov.
Index Fungorum number: IF 551927, Facesoffungi number: FoF 01962, Fig. 1
Etymology: dimocarpi referring to the host.
Holotypus: MFLU15–0045
Hyperparasite on the surface of hyphae of Meliola thailandicum. Conidiomata 90 – 98 μm diam. (x̄ = 96 μm, n = 10), superficial, solitary, globose to subglobose, attached to the superficial hyphae of M. thailandicum, ostiole absent, thin-walled, brown to dark brown. Peridium 7 – 10 μm (x̄ = 8 μm, n = 10), comprising cell layers of textura angularis, inner layer hyaline, outer layer dark brown. Hamathecium lacking pseudoparaphyses. Conidiophores reduesed to conidiogenous cells. Conidiogenous cells 5 – 4 × 2 – 3 μm (x̄ = 4.5 × 3 μm, n = 5) , holoblastic in cavity of conidiomata, cylindrical, hyaline, smooth-walled. Conidia 6 – 9 × 2 – 3 μm (x̄ = 7 × 2.5 μm, n = 10), borne singly at the apex of the conidiophore, ellipsoid to cylindrical, both ends broadly rounded, aseptate, hyaline, smooth-walled.
Material examined: THAILAND, Chiang Rai, Amphoe Thoeng, on the living leaves of Dimocarpus longan Lour. (Sapindaceae), 18 January 2015, S. Hongsanan (MFLU15–0045 holotype; KIB, isotype).
Fig. 1 Parameliola dimocarpi (holotype) a, b Conidiomata developing as hyperparasites on the thallus or hyphae of Meliola thailandicum c Hyphae of M. thailandicum with hyphopodia d Section through conidioma in 10 % lactic acid e Peridium of conidiomata f Conidiogenous cell g Conidia in 10 % lactic acid Scale bars: c – e = 10 μm, f, g = 5 μm.