ON THE CLASSIFICATION OF FUNGI. 41 



are all particularized below, though only two possess species of 

 the slightest economic value. (PI. XTII.) 



I. MELANOGASTER. Globose. Peridium adhering to fibres, 

 which wander over its surface. Cells pulpy at fii'st. 



II. RHIZOPOGON. Peridium traversed and adherent to 

 creeping fibres. Cells empty at first. 



III. HYDNANGIUM. Fleshy. Small. Peridium thin. No 

 base. Cells empty at first. 



IV. HYMENOGASTER. Globose. Fleshy or soft. Peridium 

 running down into an absorbing base. Cells empty at first. 



V. OCTAVIANA. Small. Cottony. Peridium running into 

 sterile base. Cells empty at first. 



VI. HYSTERANGIUM. Peridium separable. Substance 

 glutinous. Cells empty at first. 



THE GENERA OF PHALLOIDEL 



In this Order are three Genera, described as follows. (PI. XIV. 

 fig. 1, 2, 3.) 



I. PHALLUS. Pileo-stipitate. Pileus hood-shaped, reticulate, 

 free all round, perforate at apex. 



II. CYNOPHALLUS. Pileo-stipitate. Pileus hood-shaped, 

 smooth, adnate to Stem, not perforate. 



III. CLATHRUS. Consisting of a Receptable, forming a 

 globular lattice-work, or net, the branches of "which are of 

 cellular structure. 



THE GENERA OF TRICHOGASTRES. 



This is the Order in which the various Puff-balls and their 

 immediate kindred are comprised. There are eight Genera, as 

 follows. (PI. XIV., XV.) 



I. BATARREA. A pileiform receptacle, carried on a Stem, 

 which is mucilaginoQS Avithin. The young plant inclosed in a 

 universal Volva. 



II. TULOSTOISIA. A globose receptacle, carried on a Stem, 

 "which is pithy within. Peridium thin, and separating. 



III. BOVISTA. Globose. Peridium thin, papery, persistent. 

 Outer coat shelling off. No sterile base visible on section. 



IV. LYCOPERDON. Globose or pear-shaped. Peridium thin, 

 soft, becoming flaccid or rupturing at length on the top. Bark 

 persistent or -warty. With sterile base. 



V. SCLERODERMA. Globose. Peridium firm, with innate 



