356 
MICHAEL LEVINE 
Fig. 3. Vertical median section of young carpophore in which the pileus 
primordium is differentiated, on agar. X 170. 
Fig, 8. Vertical tangential section showing arched palisade tissue and a series 
of gill chambers. X 285. 
Fig. 13. Vertical tangential section of a somewhat older button showing a 
series of gills with separate and independent gill chambers between them. Secondary 
gills alternating with the primary gills. X 85. 
Fig. 14. Portion of figure 13 enlarged, showing (a) primary gills, (b) gill 
chamber, (c) pileus, (d) secondary gills, {e) hymenium, (s) stipe. 
Fig. 17. Section of a stipe in a well-differentiated carpophore, showing nuclei 
clustered in the center of the cell. X 120. 
Plate XL. 
Fig. 2. Hypha from the peripheral layer in the young carpophore. 
Fig. 4. Hyphae from the basal portion of the young carpophore. 
Fig. 5. Same as figure 4, but later stage. 
Fig. 6. Hypha from the mycelium near base of young carpophore. 
Fig. 7. Part of a vertical tangential section of a young carpophore showing 
ridges of palisade cells which form gill primorida. 
Fig. 9. Part of a vertical tangential section of a carpophore somewhat older 
showing the palisade cells of the hymenium and two of a series of gill chambers. 
The hyphae of the trama are continuous with the hyphae of the stipe below and 
the pileus above. 
Fig. 10. Hyphae from the trama showing branching upward. 
Fig. II. Other cells from the trama. 
Fig. 12. Hyphae from the stipe which connect above with the hyphae of the 
trama such as are shown in figures 10 and 11. 
Fig. 15. Part of the upper portion of the pileus showing the palisade arrange- 
ment of the cells below the peripheral layer. 
Fig. 16. Cells from the portion of the stipe shown in figure 17, enlarged, showing 
numerous nuclei. 
Fig. 18. Hyphae from the upper portion of the stipe near the pileus in a well 
differentiated carpophore. 
