By C. E. Broome, Eiq. 195 



concealed, consisting mostly of cells, of which the fertile ones bear 

 naked spores on distinct spicules, exposed only by the rupture or 

 decay of the peridium. 



ORDER VII. HYPOGCEI. ' 



Hymenium permanent, not becoming dusty, or deliquescent, 

 except when decaj'ed. Subterranean. 



Genus LIII., Odaviania Vitt. Peridium continuous or cracked, 

 cottony, running down into the sterile base. Trama byssoid, easily 

 divisible. Fruit bearing cells at first empty. 



O. asterosperma Vitt., has been found in Leigb "Woods, Bristol, 

 and in Cornwall. 



Genus LIV., Melanogaster Corcla. Peridium adhering to creeping 

 branched fibres, which traverse its surface, without any proper or 

 distinct base. Cells at first filled with pulp. Spores smooth, 

 mostly dark. These plants occur from one to three inches under 

 the surface of the ground. 



Melanogaster variegatus Tul., Hartham Park, Warleigh, under 

 beech trees. This species has been sold in the 

 shops in Bath as an article of food. 



ambiguus Tul., Spye Park, under beech. 



tuberiformis Corda, ditto ditto 



Genus LV., Hydnanghim Wallr. Peridium fleshy or membra- 

 naceous. Sterile base none. Trama vesicular. Cells at first 

 empty, then filled with spores. Spores echinate. 



H. Stephensii B. and B. has hitherto occurred only in woods 

 where lime trees abound near Bristol. 



H. carotoecolor B. and B. has been met with in woods near 

 Bristol, and on open chalk downs in Dorsetshire. 



Genus LVI., Hysterangium Tul. Peridium indehiscent, distinct, 

 separable. Cavities at first empty. Substance cartilagineo-glu- 

 tinous. Spores minute. Hysterangium has been met with in 

 various localities in Britain buried eight or nine inches in stiff 

 clayey soil in woods, and surrounded by a copious mycelium. 



Genus LYII., Rhizopogon Tul. Peridium continuous, or cracked, 

 adhering to creeping branched fibres, which traverse its surface. 



