JANSIA TRUNCATA. 

 By D. McAlpine. 



Volva creamy white, somewhat cup-shaped, slightly longer than 

 broad, averaging three- fourths inch in length, irregularly split at mar- 

 gin, narrowing towards base, and provided generally with one or two 

 slender, thread-like roots, which branch considerably in the humus. 



Fig. 377. 



Jansia truncata. Showing: ist. natural size ; 2d, enlarged ; 3d, the cellular structure of the inner face 

 enlarged. Photographs all from Professor D. McAlpine. 



Stem arising in the gelatinous matter contained in the volva, and 

 easily detached, cylindrical, hollow, whitish at base, but gradually pass- 

 ing into a salmon-pink, the surface marked out into small polygonal 

 areas by shallow depressions. 



Receptacle a direct continuation of the stem, but sharply distin- 

 guished by its deep, dark crimson color and surface, roughened by a 

 raised, irregular network, with meshes variable. The convolutions 

 are shown clearly in the photograph. It tapers slightly towards apex, 

 where it terminates in a distinct circular opening. 



484 



