DESCRIPTION OF PLATES. 441 
Fig. 25.—a, Hymenoscypha pseudo-tuberosa, a group the nat. size, 
arising from a decayed acorn; 6, a section of a cup slightlv magnified ; 
c, two asci with paraphyses; d, six sporidia, showing their variable 
size. cand d x 400 times. 
Fig. 26.—a, Hymenoscypha coronata, a group the nat. size; b, two 
cups magnified, one being a section; ve, an ascus with a paraphysis ; 
d, three sporidia. cand d x 400 times. 
Fig. 27.—a, Hymenoscypha Broomei, a group the nat. size; 0, three 
cups magnified; ¢, a section of a cup; @, two asci; e, six sporidia. 
d and e x 400 times. 
Fig. 28.—a, Chlorosplenium zxruginosum, a group the nat. size; 
b, two cups slightly magnified; c, a section of a cup; d@, an ascus with 
paraphyses ; e, seven sporidia. d and e x 400 times. 
Fig. 29.—a, Belonidiwm culmicolum, a group the nat. size; b, two 
cups magnified 10 times; ¢, a section of a cup magnified 10 times ; 
d, an immature and a mature ascus with paraphyses ; e, four sporidia, 
one of which shows a gelatinous envelope not unfrequently seen to 
surround them. 4d and e x 400 times. 
Fig. 30.—a, Helotium ferruginosum, a group the nat. size ; b, three 
cups slightly magnified; ¢, a section of a cup slightly magnified ; 
d, two asci with paraphyses ; e, six sporidia in various stages of develop- 
ment. dande x 400 times. 
Fig. 31.—a, Helotium claro-flavwm, a group the nat. size; b, a group 
slightly magnified; c,a section of a cup also magnified; d, an ascus 
with paraphyses; e, seven sporidia in various stages of development. 
d and e x 400 times. 
Puate VI. 
Fig. 32.—a, Moilisia cinerea, a group the nat. size; b, a group seen 
from above, slightly magnified; c, two cups viewed sideways, also mag- 
nified ; d, a section of a cup; e, an ascus with paraphyses; /, twelve 
sporidia, representing the variation in size and form in the same 
individual. e and / x 400 times. 
Fig. 33.—a, Mollisia nervisequia, a group the nat. size on a frag- 
ment of a leaf of Plantago; b, two cups magnified 20 times, and in two 
stages of development; c, a section of the younger one; d, an ascus 
with paraphyses; ¢, six sporidia. d and e x 400 times. 
Fig. 34.—a, Mollisia dilutella, a group the nat. size; b, three cups 
magnified, showing the several stages of growth; d, three asci; ¢, eight 
sporidia, showing the degree of variability of size and shape. d and 
e x 400 times. ; 
Fig. 35.—a, Mollisia Bullii,a group the nat. size; b, a group mag- 
nified; c, a section of a cup also magnified; d, two asci; ¢, seven 
sporidia, showing variation of size. d and e x 400 times. 
Fig. 86.—a, Mollisia cerastiorum, a fragment of the host plant 
