194 



The Fungi of Wiltshire. 



floccose, hollow, inflated. Hymenium smooth, when dry collapso- 

 pubescent. 



Genus LI., Hymenula Fr. Effused, very thin, macukeform, 

 agglutinate, between waxy and gelatinous. 



Genus LIL, Ditiola Fr. Orbicular, margined, patellseform. Hy- 

 menium discoid, gelatinous, at first veiled. 



Family II. Gasteromycetes. 



The Gasteromycetes have a distinct, often stipitate peridium 

 inclosing free, or compacted threads, or laminae, from which the 

 spores spring, and in the most highly organized genera a distinct 

 though convolute hymenium. Spores naked, or rarely surrounded 

 by a cyst, but in that case springing from the tip of a fertile thread. 



The following is Mr. Berkeley's arrangement of the orders. 



(Podaxinci. Stipitate, subclavseform ; hymenium con- 



volute, inclosed in a volva-like peridium, 

 withering, or entirely drying up so as to 

 form a dusty mass. 



Subterraneous ; naked, or invested with 

 a confluent, or very rarely a distinct 

 peridium. 



Hymenium passing into a diffluent mass. 

 Peridium inclosing one or more distinct, 

 free or stipitate sporangia, which contain 

 a mass of cells, of which the central ones 

 produce spores, or sporophores. 



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fr 



Hypogci. 



Phalloidci. 

 Nidulariacei. 



(Trichogastres. Plant at first cellular. Hymenium dry- 

 ing up, and leaving a dusty mass of threads 

 and spores. 



Myxogastres. Whole plant at first gelatinous. Peri- 

 dium containing at length a dusty mass of 

 threads and spores. 



In the Gasteromycetes the hymenium is more or less permanently 



