55(54) Spores with a regular pattern of warts and intact epispore, 26-32 × 15-17.5µm. _Ascobolus stictoideus_ (fig. 9) - Spores with irregular patches of thicker pigment, especially at the poles, 28-35 × 16-18µm. _Ascobolus degluptus_ 56(50) Spores mostly 18 × 10µm or larger. 57 - Spores mostly smaller than 20 × 10µm. 61 57(56) Apothecia small, mostly up to 1mm diam., colourless. Spores 20-35 × 11-14µm, epispore cracks distant, irregular, often anastomosing. _Ascobolus albidus_ (figs 7, 9) - Apothecia larger, usually 1mm diam. or more, disc yellowish, greenish, purplish or brownish. 58 58(57) Apothecia crowded, purplish or purplish brown with intercellular pigment. Spores 18-28 × 10-12µm, with longitudinal anastomosing cracks. _Ascobolus roseopurpurascens_ - Apothecia yellowish or greenish. 59 59(58) Spores 17-22 × 9.5-12µm with a few widely spaced and irregularly oriented cracks. _Ascobolus michaudii_ - Spores with closely spaced, ± longitudinal, cracks, with varying degrees of anastomosis. 60 60(59) Apothecia furfuraceous, sessile. Ascus wall blue in iodine. Spores 19-28 × 10-14µm. _Ascobolus furfuraceus_ (fig. 7) - Apothecia smooth, substipitate. Ascus wall only faintly blue in iodine. Spores 19-22 × 9.5-13µm. _Ascobolus perplexans_ 61(56) Apothecia large, stipitate, 5-10mm diam. Spores 16-19.5 × 8.5-10µm, with subparallel, longitudinal, only rarely anastomosing lines. _Ascobolus lignatilis_ - Apothecia up to 2mm diam. 62 62(61) Apothecia white. 63 - Apothecia yellow, green or brownish. 64 63(62) Spores 13-17 × 7.5-8.5µm, with a coarse reticulum of fine cracks when mature. Only recorded on grouse, capercaillie etc. (Tetraonidae) dung. _Ascobolus carletonii_ - Spores 16-20 × 8-10µm, with a pattern of longitudinal anastomosing cracks. Only recorded on deer dung. _Ascobolus sacchariferus_