416 BOTANICAL GAZETTE [JUNE 
Fics. 8,9. Normal forms with cysts nearly mature. A-+ 4. 
Fic. to. Rods from rising mass. Leitz =y oil +4. 
Fic. 11, Somewhat elongated cysts with shorter pedicel. D+ 4. 
Fics. 12,13. Normal cysts. D+ 4. 
PLATE XXVII,—Chondromyces sessilis Thaxter. 
Fic. 14. Rosette of cysts seen from above. D-+ 4. 
Fic. 15. Rosette seen from below. A-+ 4. 
PLATE XXVII.—Chondromyces muscorum Thaxter. 
Fics. 16,17. Habit of mature cysts on hepatic leaves. A+ 4. 
Fic. 18, Rods of rising mass. Leitz +g oil +4. 
PLATE XXVII,—Myxococcus disciformis Thaxter. 
FG. 19. Group of cysts on Sphagnum leaf, two showing Myxococcus-like 
eee of immature condition. pe 
Fi . Masses of cysts formed on an old perithecium of Sordaria, the 
luirrow ones seen edgewise. A-+ 4, 
_ Fig. 21. Rods. Leitz +4; oil + 4. 
{ 
PLATE XXVII.—Polyangium sorediatum Thaxter. 
Fic. 22. General habit of large cyst sorus. A+ 4. 
FIG, 23. Isolated cysts, two cohering. Apoch. water + 4. 
F1G. 24. Rods in rising mass. Leitz +4y + 4. 
PLATE XXVII,—Polyangium sepiatum Thaxter. 
Fig. 25. General habit of mature sori, with a rising rod-mass. A+ 4. 
Fig. 26. Small sorus enlarged. D+-4. 
FiG. 27, Fivecysts of various form. Apoch. water+4. 
Fic. 28. Rods from rising rod-mass, Leitz +g oil + 4. 
PLATE XXVII.—Polyangium composttum Thaxter 
F1G. 29. Sorus of four primary cysts. D+ 2. 
F1G. 30. Portion of margin of a broken primary cyst, showing secondary 
cysts, two of which are separate. D + 4. 
NoTe.— The figures were drawn with camera, the combinations of eye- 
pieces and objectives used being indicated in each case. Unless otherwise 
indicated, Zeiss objectives were used. The original drawings are reduced 
about one-fourth. 
