Stem: slender, similarly coloured to the cap, except for a brownish wine-coloured zone at the very apex, thickened upwards and smooth with a white and woolly base. Gills: adnate to decurrent, white then cream-colour or yellowish, triangular in shape, very distant and often connected by veins. Flesh: pale cream-colour. Spore-print: white. Spores: medium sized, hyaline under the microscope, broadly ellipsoid, or pip-shaped, not becoming bluish grey in solutions of iodine, 8-10 × 5 µm in size. Marginal and facial cystidia: absent. _General Information_: This fungus is common and often in large troops on peaty ground in woods as well as in moorland and mountain regions. In mountains _O. ericetorum_ must be carefully distinguished from some of the truly mountain species of _Omphalina_ dealt with on p. 236. _O. wynniae_ (Berkeley & Broome) P. D. Orton is similar but pale lemon-yellow and is found on stumps of conifers. The word _ericetorum_ refers to the habit of growing on heaths--_Erica_ is the Latin name for heath. In many books this same fungus is called _O. umbellifera_ which reflects the shape of the cap--umbrella shaped. _Illustrations_: Hvass 116; LH 99; NB 85⁷; WD 29⁹. ~Entoloma helodes~ (Fries) Kummer _Cap_: width 25-75 mm. _Stem_: width 2-6 mm; length 25-55 mm. _Description_: Cap: finely or minutely velvety at centre, fibrillose or white silky as if frosted towards the margin, sepia or bistre, or mouse-grey, dull-coloured but with a hint of violaceous brown. Stem: equal or slightly thickened at the apex, sometimes club-shaped, thickened at the base, greyish brown and pale cream-colour at the base. Flesh: dark sepia in the cap, whitish in the stem and smelling strongly of meal. [Illustration: Plate 77. Moorland fungi] Gills: white or whitish at first then dirty pinkish brown, adnate and emarginate. Spore-print: dull salmon-pink. Spores: medium to long, angular, ellipsoid-oblong, slightly cinnamon-colour under the microscope and 9-12 × 7-8 µm in size. Marginal cystidia: conspicuous, spindle or bottle-shaped and with subcapitate apex. Facial cystidia: absent. ~Hypholoma ericaeum~ (Fries) Kühner _Cap_: width 15-30 mm. _Stem_: width 4-7 mm; length 50-100 mm. _Description_: Cap: fleshy, convex, later becoming flattened but remaining slightly umbonate at the centre, viscid at first, smooth and shining when dry, bright reddish to sand-colour or brown. Stem: slender, yellow above, brown below, smooth and tough. Gills: adnate or adnexed, purplish black with a whitish margin and fairly crowded. Flesh: yellowish or red-brown in the stem. Spore-print: purple-brown. Spores: long, dark purple-brown, broadly ellipsoid and 12-15 × 7-9 µm in size. Marginal cystidia: cylindrical or flask-shaped. Facial cystidia: flask-shaped and filled with contents which become yellowish in solutions containing ammonia.