Scleroderniaceee 



FAMILY III. SCLERODERMA'CE-ffi. 



Peridium discrete from the gleba, often with a columella; cells of the 

 gleba subpersistent. Morgan. 



GENUS I. SCLERODER'MA Pers. 



Sclcros, hard; derma, skin. 



Skin firm with an innate bark, bursting irregularly; woolly threads Scieroderma. 

 adhering on all sides to the bark and forming distinct veins in the cen- 

 tral mass. Base sterile, usually becoming elongated into a stem-like 

 structure. Spores large, granulated. 



Scieroderma vulgare and verrucosum are general and very common 

 over the United States. S. bovista and S. geaster have the same range 

 but are not so common. They much resemble puff-balls, but are more 

 pudgy, solid-looking. All are edible. Their qualities are noted under 

 their descriptions. 



S. vnlga're Fr. vulgaris, common. (Plate CLXXX.) Sub- 



sessile, irregular; bark corky, hard, 

 opening indefinitely; inner mass in 

 which the spores are collected into 

 little heaps separated by a few 

 grayish woolly threads, bluish-black. 

 Spores dingy; in the mass blackish 

 with purple tinge, globose, warted, 

 9 i ijtt Mas see. 



The larger form is generally of a 

 yellowish or brownish hue, surface 

 warty or covered with rough scales ; 

 the smaller, stemless minutely warty, bright brown. 



Under trees, etc. Often cespitose, 1-3 in. across. 



(Plate CLXXX.) 



SCLERODERMA VULGARE. 



A-B. Firm when young and remain 

 nearly so when mature. 



Peridium 



615 



