25(24) Spores 40-55 × 7-9µm, readily disarticulating, the end cells longer than wide, the rest shorter than wide. _Sporormiella vexans_ (fig. 21) - Spores 70-80 × 16-18µm, end cells rounded. _Sporormiella heptamera_ 26(24) Spores mostly longer than 45µm. 27 - Spores less than 50µm long, not disarticulating at the central septum. 28 27(26) Spores 45-60 × 5-7.5µm, disarticulating at the central septum, all cells the same width. _Sporormiella bipartis_ (fig. 21) - Spores 50-59 × 10-12µm, not disarticulating, 3rd cell down wider than the others. _Sporormiella corynespora_ 28(26) Spores (33)37-40(49) × 7-9µm, cylindrical. Asci abruptly contracted below. _Sporormiella pascua_ - Spores 40-48 × 7-8µm, fusiform cylindrical. Asci gradually tapered below. _Sporormiella octomera_ 29(6) Spores obviously 2-celled at maturity. 30 - Spores 1-celled, or appearing 1-celled at maturity. (Those of _Podospora_, _Schizothecium_ etc. are 2-celled in early stages of their development, but only one cell matures to become pigmented; the other remains hyaline, often collapses, and may be difficult to see). 47 30(29) Spores 23-28 × 13-17µm, upper cell dark, 15-19µm, with close, blunt spines giving the impression of a pitted spore surface, with apical germ pore, the lower cell hyaline, 6-8.5µm, smoky-brown. Asci unitunicate, 4-spored. Perithecia 400µm diam. _Apiosordaria verruculosa_ (fig. 24) - Both cells of spore similar in shape, size and colour. 31 31(30) Asci unitunicate. Spores with a 'gelatinous' appendage at each end. Perithecial neck with setae. 32 - Asci bitunicate. Spores without gelatinous appendages, although a sheath may be present. 33 32(31) Spores 38-48 × 11-14µm, appendages longitudinally fibrillate. _Zygospermella striata_ - Spores 46-68 × 11-17µm, appendages hollow, not fibrillate. _Zygospermella insignis_ (fig. 25) 33(31) Spores with each end truncated by a germ pore. Pseudothecia with dark bristles at neck. (_Trichodelitschia_) 34 - Spores with rounded ends and germ slits along the sides. Pseudothecial neck smooth or hairy, but without setae. (_Delitschia_, fig. 26) 36