60 Haynes: AYTONIA 
PLATE 6, Aytonia jamaicensis sp. Nov. 
. Plant, natural size. 
2 ae 3. Outlines of cross-sections of thallus, X 9. 
4. Median cross-section of thallus dsaina stoma, X55. The fungal hyphae 
shown here in certain cells were found inalmost all specimens examined and oc 
generally poche the tir Ghee portions of the thallus. 
5- x 2 
6 and 7. pee 8 lower sides of a single immature carpocephalum, < 6. 
8 and 9. Opposite sides of a single carpocephalum with two mature sporogonia 
no. 8 eae upper portion of peduncle, > 6. 
10 and 11, Opposite sides of a single carpocephalum showing the mature sporo- 
gonia, a third abortive one, and upper portion of peduncle, X 6 
m, X 13. 
18 and 19. Scales from the carpoce phate showing cells, > 55- 
20. Surface view of stoma, 360. 
21. Surface view of scileteeal cell and trigones, < 250. 
22. Spore, inner face, 250. 
43 
24 
25. Elater, 2-spiral, & 182 
2 5. 
27: Oil-body completely filling os < 250. 
28. Scale from androecium, 5 
