." CRYPTOGAMIA FUNGI. 1029 



-•-."' . 'as to form concentric arches or waves near the 



rim. 



The gills are thick, deep, coriaceous, and branch- 

 ed, many of them runriing into one another, 

 and forming various finufes or labyrinths. 



The rim of the Pikusxs often divided into lobes, 

 and the bafe or centre is fometimes imbricated 

 ■ .\ with fmaller famples of the fame fpecies. 



It is perennial in its nature, and never fades. 



When thoroughly beaten with a hammer, it makes 

 excellent touchwood or tinder. 



f.hteus 12. A. acaulis, lamellis bifidis pulverulentis. Sp. pL 

 1645. (Buxbaum. Cent. 5. tab. "j.f. i. Ba- 



• tarra. p. y^. tab. 38. fig-f- d.) 

 Alder Agaric. Anglis. 



Upon the trunks of trees, and dead wood. XI. 



and III. 

 It is fhaped like the feflor of a circle, or the fhell 



of a bivalve, about half an inch, fcldom an 



inch in the Radius. The fubftance dry and 



coriaceous. 



• • It grows either horizontal, or flat, with the gills 

 \ dov/nwards. 



The upper lurface is convex, and .^overed with a 



woolly down either oi a white or grey color. 

 The gills are grey or Icad-color'd, covered with a 

 (hort down, vifibie with a microfcope, and 

 '^'' -■ ■ ' y u u 3 each 



