130 NORTH AMERICAN SORDARIACEAE 
PLATE 15 
1-3. Sporormiella nigropurpurea. 1. Perithecium. 2. Ascus. 3. Spore. 
4-6. Sporormia chrysospora. 4. Perithecium. 5. Ascus, 6. Spore 
7-9. Sporormia Dakotensis. 0 Perithecium, 8. Ascus. 9. Spore. 
10-12. Sporormia pulchella. . Perithecium. 11. Ascus. 12. Spore. 
13-15. Sporormia tuberculata. = Pesh: 14. Ascus. 15. Spore. 
16-18. Sporormia minima. 16. Perithecium. 17, Ascus. 18. Spore. 
19-21. Sporormia intermedia, 19. Perithecium. 20. Ascus. 21. Spore. 
22-24. Sporormia leporina, 22. Perithecium. 23. Ascus. 24. Spore. 
PLATE 16 
1-3. Sporormia megalospora. 1. Perithecium. 2. Ascus. 3. Spore. 
4-6. Sporormia 0 4. Perithecium. 5. Ascus. 6. Spore. 
7-9. Sporormia Kansen 7. Perithecium. 8. Ascus. 9. Spore 
10-12. Sporormia roy iû, Perithecium. Ir. Ascus. 12. Spore. 
PLATE 17 
. Sporormia herculea. 1. Perithecia. 2. Ascus. 3. Spore 
Wa Sporormia fimetaria. 4. Perithecium. 5. Asci, X 630. 9 Manil X 460. 
7. Spore. 
8-10. Sporormia corynespora. 8. Perithecium. 9. Ascus. Io. Spore. 
11-13. Sporormia Americana. 11. Perithecium. 12. Ascus. 13. Spore. 
PLATE 18 
1. Abnormal perithecium of Pleurage zygospora. Two functional beaks are 
developed, 
2. Abnormal perithecium of Pleurage vestita with two functional beaks. 
A Abnormal perithecium of Pleurage decipiens with forked beak 
. Abnormal perithecium of Sordaria fimicola with two functional beaks. 
5 Forked beak of Pleurage vestita. 
. Two abnormal asci of Pleurage decipiens, The ascus wall has in each case 
transformed into a dark brown tissue like the spore wall. One of the asci has be- 
come تست با‎ ate. 
normal ascus of Pleurage Kansensis which has been transformed into a spore 
of m same shape as the ascus. 
8. Abnormal one-spored ascus of Pleurage taenioides. 
9-13. Abnormal spores of /leurage zygospora. All sorts of abnormalities are 
pur in the m of this species. - 
. Beak of perithecium of Sordaria eme A column of spores of the same 
کو‎ as the ostiolum is being pushed ہ‎ 
15-17. Showing the development of vg ascus in Pleurage zygospora. In the last 
are shown young spores. 
18. Young spore e Pleurage zygospora. 
19-22. Outlines of successively older spores of Pleurage س‎ 
