142 EPPING FOREST every dead stump. The irregular-shaped pileus is attached along the black edge, whilst the upper surface is olive and hairy, with a golden-yellow edge. The under surface is smooth, without gills or pores, and golden yellow. Stereum purpureum. Similar to the last but smaller, and the under surface of some tint of purple, instead of yellow. Tremella foliacea. Soft and jelly-like masses, as large as a walnut, or small apple, of a brownish colour, on rotten trunks. Substance yielding to the touch, contorted and twisted, shaking like jelly when removed. Lower Forest, Fairmead, Theydon Bois. Exidia glandulosa. Smaller and black, with scattered spiny projections. Firmer in substance, and found growing on fallen oak branches. Loughton side. Phallus impudicus. The Stinkhorn, well known from its strong odour and singular erect form, will be detected in all parts of the Forest by the smell, even if it should not be seen. Hundreds of other kinds of fungi are to be found in different parts of the Forest, which it would be impossible to include in a book of this size. Coloured figures of many hundreds of them may be seen in the Forest museum. There are, besides those enumerated, hundreds of species of fungi to be found in the Forest district, which are only of interest to those who study the subject specially, the majority being only just visible to the naked eye. Of these the most important are the rusts, smuts, and mildews, parasitic on growing plants,1 more or less destructive to vegetation, and injurious to forest trees. In addition are the minute species which flourish on dead vegetation, decaying leaves, fallen twigs and branches, old stems, and prostrate trunks. All these are constantly at work, destroying the vestiges of an old vegetation, and preparing a vegetable humus, for the growth of a new generation. The pretty cups of Peziza aurantia, from an inch to two or three inches in diameter, may often be seen growing in company on the damp ground. These may be taken as the type of about sixty species recorded for the Forest,2 some of them so minute as only to be just visible to the naked eye. To these might be added fully sixty species of minute moulds, which have been but little sought after, and might probably soon exhibit a list of double that number, all of which require the use of the microscope. Those who are interested in those extraordinary organisms called Myxogasters, which in one stage of their existence resemble animals, and in another seem to be plants, would find a good field for their researches in the Forest, which, according to Mr. Lister, is a happy hunting-ground. 1 A list of some sixty-eight Forest species was given in the Essex Naturalist of September 1887. 2 Essex Naturalist for 1888.