EXPLANATION OF PLATE. 



Figs. 1-5 inclusive are about three-fourths natural size as reduced. The re- 

 mainder of the figures were drawn with a camera lucida with the magnifications 

 indicated, and reduced one-third in the reproduction. 



Fig. 1. Several young fruiting bodies on a common mycelium. 



Fig. 2, 3, 4. Specimens illustrating different habits. Fig. 3 shows chambers 



exposed in a few places. 

 Fig. 5. Median longitudinal section of mature specimen, x = perid., 



y = col., z = gleba. 

 Fig. 6, 7, 8. 9. Sections of various stages. Fig. 8, X 16; Fig. 9, X 16; Fig. 6, 



X 12; Fig. 7, X 10. 

 Fig. 10. The end of columella seen from outside. 



Fig. 11. Chambered structure seen from outside where peridium has 



opened, X 19. 

 Fig. 12. A young and a mature basidium bearing spores. 



Fig. 13. Portion of Fig. 8. G25 diam. x, y, z, as above. 



Fig. 14. Portion of chamber wall, showing trama and basidia. 



Fig. 15. Groups of basidia and spores. Oc. 4., £% oil im. 



