136 EPPING FOREST sometimes measure nearly a foot across. Lower Forest, High Beach, etc. Pleurotus ulmarius. Sometimes singly and sometimes two or three together, on dead elms. Creamy white or pale tan colour. Cap from two or three to six or eight inches in diameter. Thick and fleshy, with a mealy odour. Near Chingford and Loughton. All the foregoing species have white spores, which fall upon the ground beneath, when mature, like chalk powder. Fungi which have pink or salmon-coloured spores are rarely edible, and often poisonous. Clitopilus prunulus. Plum mushroom. Clitopilus orcella. Sweetbread mushroom. These are two species with pink spores, and are nearly of the same size and appearance. The cap is almost flat at first, then concave; ivory white with a satiny lustre, and rather sticky when moist. About two inches in diameter, with a short stem and pale purplish pink gills. Odour strong and mealy. Both found in the Lower Forest, as well as around High Beach. Of edible species with purple-brown spores the most useful are : Agaricus campestris. The common mushroom, which should be very well known, and has at first pink gills, afterwards dark purple-brown. Grows in open pastures. Agaricus arvensis. The horse mushroom, generally of a larger size, with gills at first of a dirty white (never pink), and afterwards becoming nearly black. Lower Forest. Coprinus comatus. " Shaggy caps." Grows in tufts on the ground. The cap three or four inches long, and half as thick, is covered with shaggy fibres, wholly dirty white. The gills are whitish until the cap begins to expand, when they become black, and at length melt away in drops, like treacle. Common on waste ground. Coprinus atramentarius. "Inky mushroom." Grows in large tufts, mostly near rotten wood, posts, etc. Cap smooth, smoky gray, not so cylindrical as the last, sometimes larger. When expanded the gills melt and drip away like ink. Edible when young. Hygrophorus eburneus. Pure white. Cap less than two inches, stem longer. Slimy when moist. Found on the elevated sides of Monk Wood. Hygrophorus virgineus. Ivory white, sticky when moist, cap one or two inches broad, becoming flat; gills broad, and distant from each other, running down the short stem. Open spaces and glades, King's Oak to Wake Arms. Paxillus involutus. Large and very common under trees. Cap four to six inches broad, with the edge at first rolled inwards. Gills close together running down the stem. Wholly dark tan-colour, dirty brown when moist. Edge of cap woolly. Cantharellus cibarius. " The chantarelle." Whole plant of an egg-yellow colour, two or three inches high, two inches broad. Gills very thick and shallow, like veins,