42 ON THE CLASSIFICATION OF FUNGI. 



bark. Capillitium (interior substance) dark, veined by flocci 

 adherent to ]\M-i(linm. 



VI. POLYSACCUM. Pear-shaped. Peridium rigid, inclosing 

 cells filled with minute rounded bodies. 



VII. CENOCOCCUM. Small. Peridium black, naked, even- 

 tually hollow. 



VIII. GEASTER. Globose. Double Peridium, of which the 

 outer one splits and expands in stellate lobes. 



ASC02IYCETES. 



This is the only one of the two sporidiiferous Families which 

 contains Fungi that can be considered as what we have concluded 

 to term Mushrooms. The arbitrariness of this designation is here 

 manifested ; for, though there are six Orders in the Family, we can 

 only select two, and of their Genera only a few, as comprising 

 ]ilants of the kind so entitled. The two mushroom-containing 

 Orders are : — 



Tuberacei : Subterranean. Hymenium waved and sinuate, 

 often (•onij)]icated and closely packed. 



Elvellacei : Fleshy, waxy, or gelatinous. Hymenium exposed. 



It will be remembered that, in this Family, the Sporidia are 

 contained in minute cells, called Asci, and are not appreciable to 

 the naked eye. 



THE GENERA OF TUBERACET. 



There are eleven Genera in this Order, but only two of them 

 come within our range, and are pai'ticularized as follows. (PI. L. 

 and LT.) 



I. TUBER. Peridium rough, warty, tubercled, rarely smooth. 

 Xo defiiiifo base. Substance marbled. 



II. ELAPHOMYCES. Globose. Peridium hard and thick, 

 Tiapilhitc, or granuhito. Substance soft and juicy in youth, dusty 

 in age. 



THE GENERA OF ELVELLACEI. 



In this Order are twenty-two Genera, of which we shall select 

 ten for particularization as under. (PI. XLIX.) 



I. MORCHELLA. Terrestrial. Pileo-stipitato. Large. Pileus 

 impcrvions in the centre, deeply folded and pitted. 



H. HELVELLA. Terrestrial. Large. Pileo-stipitate. Pileus 

 having free margins, droojjing irregularly. Hymenium even. 



