INTRODUCTION. ui. 



4. SCHYZOPHYLLUM. — Gills radiating from the base, composed of a folded membrane ruptured at the edges 



which are revolute, bearing spores only on their outer surface. 



5. DjEDALIA. — Hymenium, anastomosing gills, or flexuous elongated pores formed out of the corky substance of 



the pUeus. 



6. POLYPORUS. — Hymenium subrotund pores, with tldn simple dissepiments concrete with the substance of the 



pileus. 



7. BOLETUS. — Hymenium cylindrical separable tubes, distinct from the substance of the pileus. 



8. PISTULINA. — Hymenium, tubes at first closed, wart-like, then open, of a distinct substance from the pileus, 



but concrete with its fibres. 



9. HYDNUM. — Hymenium, free spine-like processes of the same substance as the pileus. 



10. SISTOTREMA. — Hymenium, in-egularly disposed curved lamellate teeth, distinct from the pileus. 



1 1. IRPEX. — Hymenium torn into distinct spines, disposed in rows, or in a reticulate manner, their bases connected 



by lamellate or porous folds, concrete with the pileus. 



13. RADULUM. — Hymenium tuberculated, tubercles shapeless, resembling papillae or rude spines, distinct or 

 U'regularly fasciculate, inner substance homogeneous with the receptacle. 



13. PHLEBIA. — Hymenium smooth, venoso-rugose, wrinkles interrupted, disposed ii-regularly, straight or flexuous, 



homogeneous and concrete with the pileus. 



14. THELEPHORA. — Hymenium even or papillate, homogeneous and concrete with the pileus. 



Tribe II. CLAVATI. 



Receptacle vertical, simple or branched, tending to a cylindrical form. Hymenium superior. 



This second tribe is so named from davus, a club, the form of some of the species re- 

 sembHng that weapon. The spores or sporidia', are placed all over the upper external 

 surface, on which in a fully mature state, they are visible in the form of dust, or like the 

 bloom of fruit in appearance. 



1. CLAVARIA. — Receptacle erect, more or less cylindrical, homogeneous and confluent with the stem. Hyme- 



nium occupying the whole surface. 



2. CALOCER.\. — Between horny and gelatinous, tough, slimy, rooting without any distinct stem. Asci slender. 



3. GEOGLOSSUM. — Receptacle erect, club-shaped, sub-compressed, produced downwards into a distinct mass. 



Hymenium concrete, covering the incrassated receptacle. Asci elongated. 



4. SPATHULARIA. — Receptacle vertical, compressed, running down on either side into the distinct stem. 

 .5. MTTRULA. — Receptacle ovate, uiflated, closely surrounding with its base the distinct stem. 



6. TYPHULA. — Receptacle somewhat cylindrical, distinct from the capdlary stem, bearing sporules on every side. 



Asci obsolete. 



7. PISTILLAEIA. — Receptacle slender, cylindrical, without any distinct stem. Hymenium even, occupying the 



whole surface, but producing sporidia only in the upper part. Asci obsolete. 



1 In the Clavarias they are spores, that is, naked, not in cases. In others of the tribe, Geogiossum, Spa- 

 thularia, Mitrula, &e., they are sporidia; that is, enclosed in asci or thecK. A new arrangement is perhaps 

 desirable, but as it has not "yet been completed, it is necessary to conform to the present authority, that of the 

 ' English Flora '. 



