PLATE 37. 



Xylarieae. 



Fiu'. 1. Hypoxyloii perforatnin, (Sdiw.), natural size, on dead oak 

 Mini). 



2. Same niafinifipd. 



3. A smaller portion containing two perithccia liiuhly niair- 

 niliefl. 



4. A clnntor of asci in diflorcnt atajrcs ol' growth. 

 .5. A single mature ascue. 



6. Five spoiidia. 



7. Hypoxyloii mar^iiiatiim, (Scliw.). natural size, on dead oak 

 l)iii'k. 



8. Vertical section of part of a stroma considerably niagni- 

 Hed. 



I>. A cluster olasci, one of which is mature. 



10. Three sjmridia. 



^'oTK. — Figuios on this plate not diawn to any definite scale. 



