This species has no downy hairs at the base of the stem. Certain other species of _Marasmius_, frequently found growing on dead leaves in woods, and possessing this hairy down, are to be avoided. There is a poisonous plant sometimes found in similar situations, and often _with_ the Fairy-Ring Champignon (_M. urens_), fig. 30, Poisonous Sheet. I once tested its qualities (by accident). See description. =Truffle.= Fig. 29. (_Tuber æstivum._) 1916. The truffle is a subterranean fungus, invariably found under trees, often just appearing above the surface of the ground, and occasionally exposed for sale in our markets, where it will realize at times as much as 5_s._ per pound. The truffle is esteemed by many as the most delicious object of food in the whole vegetable kingdom, and by others it is looked upon with aversion or positive disgust. The odour is very powerful, and is relished by some individuals, and very much disliked by others. It is looked upon as a great delicacy boiled, or simply roasted in hot ashes. Besides the truffle sold in Covent Garden Market, there are many other species found in this country, of various forms and qualities. _T. æstivum_ varies much in size, is irregular in shape, black, rough, and warted. I must confess that, at first, I regarded the truffle with loathing; but now I have learned to greatly esteem it. It makes a capital ingredient for gravies, stuffings, and meat pies. It is frequently referred to under the name of _T. cibarium_. POISONOUS MUSHROOMS. =Bundled Stump-mushroom.= Fig. 1. (_Agaricus_ [_Hypholoma_] _fascicularis._) 331. This species occurs everywhere at the bases of old stumps, always in groups. The stem is hollow, and the gills are greenish and sub-deliquescent. There is a heavy odour attached to it, and the taste is bitter and repulsive. =Red Juice-Mushroom.= Fig. 2. (_Hygrophorus conicus._) 482. This truly handsome fungus is common in pastures and roadsides. It turns purple-black when bruised, broken, or old, and it has a strong and very forbidding odour. It is of a succulent substance, and is not unfrequently a brilliant yellow or deep orange, in place of crimson or scarlet. [Illustration] =Trellised Clathrus.= Fig. 3. (_Clathrus cancellatus._) 917. I am indebted to the late Mrs. Gulson, of Eastcliff, near Teignmouth, Devon, for the original plant from which this figure was taken. It is of extreme beauty and rarity, seldom occurring in this country, but common enough in the south of Europe. The fetor exhaled from this species is highly disagreeable, and can be compared with nothing but itself. It is so horribly repulsive and loathsome as to make a mere examination of the plant a matter of the greatest difficulty. In the young state the odour is less strong, or altogether absent. =Fetid Leather-fungus.= Fig. 4. (_Thelephora palmata._) 760.