26(25) Cap with a mixture of hyaline and brown thick-walled setules. Spores 9-10 × 5.5-6µm, with eccentric germ pore. Facial cystidia absent. _Coprinus heterosetulosus_ - Cap with only one type of setule. Facial cystidia present or absent. 27 27(26) Facial cystidia present. Spores 7.9-13.3 × 4.4-6.4µm, with apical germ pore. _Coprinus stellatus_ - Facial cystidia absent. Spores elongate and narrow, rarely greater than 5µm wide, with apical germ pore. Fruit body usually quite small, up to 6mm before expanding. _Coprinus pellucidus_ (fig. 58) (Several species in the group, e.g. _C. congregatus_ and _C. ephemerus_ have been found on straw/dung mixtures). 28(21) Veil strongly adhering to cap. Spores elliptic ovate, 15-20 × 8-12µm. Stem with distinct ring. Usually on buried dung. _Coprinus sterquilinus_ - Veil more floccose or powdery. Stem lacking ring or, if present (_C. ephemeroides_), fruit body small with 5-angled spores less than 10µm long. 29 29(28) Veil composed of filamentous units. 30 - Filamentous units, if present, masked by a preponderance of rounded cells. 35 30(29) Veil composed of strings of sausage-shaped, thin-walled, hyaline cells. 31 - Veil composed of rather narrow, slightly thickened hyphae. 32 31(30) Spores large, 11-14 × 6-7µm. Cap up to 1cm before expanding. Fruit body with or without a rooting base. _Coprinus radiatus_ - Spores smaller, up to 9µm long. Cap up to 6mm before expanding. Fruit body without a rooting base. _Coprinus pseudoradiatus_ (fig. 59) (_C. cinereus_ is found on straw/dung mixture and _C. macrocephalus_, with large spores, has been recorded on raw dung). 32(30) Veil citrus- or lime-yellow, or a mixture of hyaline and brown strongly coloured hyphae. 33 - Veil grey or whitish. 34 33(32) Veil of yellow hyphae. Spores 10.5-12.5 × 6-7.5µm. _Coprinus luteocephalus_ - Veil with brown hyphae. Spores 7-9 × 3.5-5µm. _Coprinus poliomallus_