532 
W. H. SAWYER, JR. 
Fig. 33. A section tangent to the stem at its junction with the pileus, showing 
two adnata gills. X30. 
Fig. 34. Structure of the mature gills. The hyphae of the trama turn out- 
ward on the sides and contribute to the formation of the hymenium, which shows as 
the deeply stained layer covering the gill. X30. 
Figs. 35-37. Tangential sections in the inrolled margin of a nearly mature 
fruit-body. In Fig. 35 the section is tangent to the "backs" of the gills. In Fig. 36 
the lamellae appear to grow across the gill cavity as bars, with a separate cavity be- 
tween each two gills. In reality it is the backs of the gills seen in section, and their 
attachment below, as well as above, represents their point of origin. Due to the 
inrolled pileus margin the tissue at either end of the "bars" belongs to the same mor- 
phological under surface of the pileus. Fig. 37 shows the origin of secondary gills 
between the primary lamellae, both above and below. X15. 
