Fig. 56. Stigmatomyces spp. A–D. S. burdigalensis (Balazuc) A.Weir & W.Rossi. A–B. Mature thalli showing labelled cells I, II, III, VI, and basal cell of primary appendage (bc a). C. Primary appendage in detail from an immature thallus. D. Perithecial apex in detail showing slightly undulate margins and a conical tip. – E–G. S. constrictus Thaxt. Mature thalli. Surface of basal cell I appears characteristically striated (arrows in E and G). Scale bars: 50 µm. Photographs from slides ZMUC C-F-123707 (A–D), ZMUC C-F-124084 (E–G).