Actinocymbe separato-setosa (Henn.) Höhn., Sber. Akad. Wiss. Wien, Math.-naturw. Kl., Abt. 1 120: 416 (1911), Figure 3
= Actiniopsis separato-setosa Henn., Hedwigia 47: 269 (1908)
MycoBank number: MB 121390;Index Fungorum number: IF 121390; Facesoffungi number: FoF 10327;
Epiphytic on the surface of leaves, epiphyllous or sometimes hypophyllous. Mycelium 4–6 μm wide, branched, septate, greyish brown, appressed to the cuticle. Sexual morph: Ascomata 470–680 μm diam. (x̅ = 590 μm, n = 10), perithecial, solitary, scattered, superficial to erumpent, subglobose to circular, brown to dark brown, ostiolate. Ostiole open, periphysate. Setae 140–180 × 4–6 μm (x̅ = 168 × 5 μm, n = 10), scattered to clustered, dark brown to black, erect, rounded at the base and wider than the apex. Wall of ascoma 26–50 μm (x̅ = 42 μm, n = 10), multi-layered, externally comprising pigmented, dark brown, thick-walled cells of textura angularis, with inner layer thinner, composed of irregularly-shaped, flattened, lightly pigmented to hyaline, thin-walled cells of textura prismatica. Hamathecium composed of long, 2.5–3μm wide, septate, paraphyses, with hyaline, guttulate cells. Asci 42–58 × 13–19 μm (x̅ = 46 × 15 μm, n = 10), 8-spored, bitunicate, fissitunicate, clavate to ellipsoid, long pedicellate, straight to slightly curved. Ascospores 24–33 × 4–7 μm (x̅ = 28 × 6 μm, n = 10), overlapping multi-seriate, oblong-ellipsoid, tapering at the ends, hyaline, usually 9-septate, without constrictions at the septa, smooth and thick-walled, lacking a gelatinous sheath or appendages. Asexual morph: Undetermined.
Material examined: Brazil, Amazonas, Rio Juruá, on leaves, May 1905, E. Ule (S-F12588, holotype).
Figure 3 Actinocymbe separato-setosa (S-F12588, holotype). Superficial ascomata on the host. b, e Squash mount of ascoma. c, j Globose ascoma with black setae. d Vertical section through peridium. f Vertical section of ascoma. g–i Asci with ascospores. Scale bars: b, f = 100 µm, c–e =50 µm, g–j = 20 µm.