PL^TE XLI 
Fig. i .—Quercus alba: A radial view of the honeycomb heart-rot produced by 
Stereum subpileatum, showing various stages of the rot; from Arkansas. 
Fig. 2 .—Quercus alba: A radial view of the last (honeycomb) stage of the rot; from 
Arkansas. 
Fig- 3 -—Quercus alba: A tangential view of honeycomb-rot, showing early stage of 
delignification; from Arkansas. 
Fig. 4 .—Quercus velutina: A radial view of honeycomb heart-rot as it occurs in tops 
of trees, showing pockets filled with strands of cellulose; from Arkansas. 
Fig. 5 .—Quercus alba: A radial view of the honeycomb-rot, showing pockets lined 
with cellulose; from Arkansas. 
Fig. 6 .—Quercus alba: A cross-sectional view of the honeycomb heart-rot, showing 
pockets limited by large medullary rays; from Arkansas. 
Fig. 7 .—Quercus alba: Radial view of honeycomb heart-rot in branch, showing last 
stage of rot; from Arkansas. 
Fig. 8 .—Quercus lyrata: Radial view of honeycomb heart-rot in old log associated 
directly with the sporophores of S’, subpileatum; from Louisiana, 
Fig. 9 .—Quercus texana: Sporophore of S', subpileatum; from Arkansas. 
Fig. 10 .—Quercus palustris: Sporophore of S. subpileatum, conchate form; from 
Arkansas. 
