Macrovalsaria leonensis (Deighton) Petr., Sydowia 15(1-6): 298 (1962) [1961] Fig. 21
≡ Valsaria leonensis Deighton, Sydowia 6(5-6): 321 (1952)
MycoBank number: MB 333583; Index Fungorum number: IF 333583; Facesoffungi number: FoF 06251;
Current name: Macrovalsaria megalospora (Mont.) Sivan. Trans. Br. Mycol. Soc. 65: 400 (1975)
Saprobic on dead branches of Caesalpinia sappan L. Sexual morph: Ascostromata 635–1010 µm high × 882–1015 µm diam., dark brown to black, immersed to erumpent, solitary to a few in a group, carbonaceous, oblate, spheroid to subsphaerical, with a central ostiole. Peridium comprising brown and small-celled textura angularis. Asci 192–198 × 31–41 µm ( x = 195.9 × 36.1, n = 20), 8- spored, bitunicate, fissitunicate, cylindro-clavate, with a short fine pedicel, apically rounded with a small ocular chamber. Paraphyses 3–6 µm wide, unbranched, tapering upwards, apically free. Ascospores 38–40 µm × 14–18 µm ( x = 38.8 × 16.6 µm, n = 20), uniseriate to irregularly uniseriate, 1-septate, brown, elliptical-fusoid, slightly constricted at septum, with skull cap-like germ apparatus at the lower end, transverse striation near the center of lower cell with longitudinal striations from transverse striation to the end cell, surface smooth, granular to verrucose. Asexual morph: Undetermined.
Material examined – AFRICA, Sierra Leone, Njala (Kori), on dead branches of Caesalpinia sappan (Fabaceae), 12 July 1949, F.C Deighton (PDD 14987, co-extype).
Economic significance – None is reported.
Figure 21 – Macrovalsaria leonensis (PDD 14987, co-extype). a Details of herbarium material. b, c Habit and appearance of ascomata on host surface. d Section of ascoma. e Peridium. f Hamathecium g, h. Asci. i–o Ascospores. Scale bars: b = 2 mm, c = 1 mm, d = 200 µm, e = 40 µm, f = 10 µm, g, h = 100 µm, i–o = 20 µm.
Species