212 



Mycologia 



Explanation of Plate XXXI (frontispiece) 



Fig. I. Nodules from decorticated branches. (Length of entire scale 

 I mm.) 



Fig. 2. Nodules as they appear on the bark, showing the difference in size 

 and form as compared with the wood nodules. (To the right of the scale.) 



Fig. 3. Diagram of a longitudinal section of a nodule, cutting through a 

 perithecium. X 28. 



Fig. 4. Diagrammatic longi-section of a nodule and perithecium with the 

 asci and spores extruded. X 28. 



Fig. 5. Upper portion of a spore-sac showing the thickened apical wall and 

 the coiled spores projecting beyond the broken basal end. X 360. 



Fig. 6. A single filamentous spore. X 360. 



Fig. 7. A fragment of a spore and paraphysis. X 720. 



