Phaeosaccardinula diospyricola Henn., Hedwigia 44: 67 (1905), Figure 10

MycoBank number: MB 156465; Index Fungorum number: IF 156465; Facesoffungi number: FoF 10340;

Epiphytic on the upper surface of living leaves of Diospyros sp. forming a sooty-like coating. Mycelium 3–6 μm wide (x̅ = 5.2 μm, n = 20), superficial, black, composed of dark brown to black, reticulate to branched, septate hyphae. Sexual morph: Ascomata 165–235 × 125–190 μm (x̅ = 197 × 162 μm, n = 10), superficial, scattered, globose to subglobose, cupulate when dry, dark brown to black, lacking setae, thick-walled, ostiole inconspicuous. Wall of ascoma 20–35 μm wide, multi-layered, externally comprising pigmented, dark brown, thick-walled cells of textura globulosa, with inner layer thinner, composed of lightly pigmented to hyaline, thin-walled cells of textura prismatica. Hamathecium lacking pseudoparaphyses. Asci 42–58 × 28–36 μm (x̄ = 52 × 32 μm, n = 10), 6–8-spored, bitunicate, oblong-ellipsoid, clavate when young, subglobose to oval when mature, sessile or shortly pedicellate, early evanescent, lacking an ocular chamber when mature. Ascospores 55–62 × 6–9 μm (x̄ = 58 × 8 μm, n = 10, overlapping 2–4-seriate, hyaline, olivaceous green at the septa of mature ascospores, oblong-ellipsoid, muriform, with 7–9 transverse septa and 3–5 longitudinal septa, constricted at the septa, with a mucilaginous sheath. Asexual morph: Undetermined.

Material examined: Peru, Rio Amazonas, Tarapoto, on leaves of Diospyros sp. (Ebenaceae), September 1902, E. Ule 6471 (S-F9582, isotype).

Figure 10    Phaeosaccardinula diospyricola (S-F9582, isotype). a Ascomata on the superficial of the host. b, c Squash mount of ascoma. d, f Vertical section of ascomaat. e Vertical section through peridium. g–j Asci with ascospores, asci in g stained in lactophenol cotton blue. k, l Ascospores, l stained in lactophenol cotton blue. Scale bars: b, c, g = 50 µm, d, f =100 µm, e, h–j = 20 µm, k, l = 10 µm.