_Cap_: width 6-15 mm. _Stem_: width 1 mm; length 30-60 mm. _Description_: Cap: similarly coloured to _G. hypnorum_, but with a few white silky fibrils. Stem: coloured as the cap, but with white silky fibrils when young. Gills and flesh: as in _G. hypnorum_, but it has no smell. Spore-print: rust-colour. Spores: medium-sized, ellipsoid, pale golden yellow under the microscope, smooth and 9-11 × 5-6 µm in size. Marginal cystidia: club-shaped, cylindrical and with distinct rounded heads. Facial cystidia: absent. _General Information_: _G. mniophila_ (Lasch) Kühner is similar to or slightly larger than _C. mycenopsis_, but differs in its dull honey-coloured cap and stem, and distinctly roughened spores. _G. calyptrata_ P. D. Orton is small and has been long confused with _G. hypnorum_; it, however, is of a much brighter orange-colour, with distinct white fibrils on the cap and has spores which have a distinct envelope, sometimes separating as a loose covering. _G. vittaeformis_ (Fries) Moser is a red-brown fungus with 2-spored basidia, facial cystidia, minutely hairy stem, and very rough spores; it grows in moss in pastures as well as on moss-cushions. (vi) Heath and mountain fungi (a) Moorland fungi ~Marasmius androsaceus~ (Fries) Fries Horse-hair toadstool _Cap_: width 5-15 mm. _Stem_: width 1 mm; length 30-60 mm. _Description_: Plate 77. Cap: whitish to pale smoke-brown with a distinct wine-coloured tinge, membranous, flattened, or umbilicate and radially wrinkled. Stem: thread-like, black or very dark brown, horny and usually springing from a black horse-hair-like mycelium. Gills: whitish or dirty flesh-colour, adnate and crowded. Flesh: white in the pileus and black in the stem. Spore-print: white. Spores: medium-sized, pip-shaped, not blueing in solutions containing iodine and measuring 7-9 × 3-4 µm in size. Marginal cystidia: oval or ellipsoid, covered on the upper half with small pimple-like projections. Facial cystidia: absent. _General Information_: This fungus is common in troops from late summer until winter on dead and dying heather. It is also found in woods on leaves and twigs, particularly in plantations on conifer needles. It is easily recognised by the dark horse-hair-like stem which becomes bent and twisted on drying and the small, pinkish flesh-coloured cap. The word _androsaceus_ means, and refers to, the stem which resembles the tough and wiry fronds of some of the red algae, such as _Ahnfeldtia_ which is found around our sea-shores. _Illustrations_: LH 115; NB 47¹; WD 24⁴. ~Omphalina ericetorum~ (Fries) M. Lange _Cap_: width 5-20 mm. _Stem_: width 2 mm; length 10-20 mm. _Description_: Cap: variable in colour, straw-colour, cream-colour, bistre or grey, convex then flat or slightly depressed, radially grooved to the centre when moist; the margin is scalloped.