DESCEIPTION OF PLATES. 441 



Fig. 25. a, Hymenoscypha pseudo-tuberosa, a group the nat. size, 

 arising from a decayed acorn ; &, a section of a cup slightlv magnified ; 



c, two asci with paraphyses ; d, six sporidia, shewing their variable 

 size, c and d x 400 times. * 



Fig. 26. a, Hymenoscypha coronata, a group "the nat. size ; 6, two 

 cups magnified, one being a section ; c, an ascus with a paraphysis ; 



d, three sporidia. c and d x 400 times. 



Fig. 27. a, Hymenoscypha Broomei, a group the nat. size ; b, three 

 cups magnified ; c, a section of a cup ; d, two asci ; e, six sporidia. 

 d and e x 400 times. 



Fig. 28. a, Chlorosplenium seruglnosum, a group the nat. size ; 

 &, 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, Belonidium culmicolum, a group the nat. size ; &, two 

 cups magnified 10 times ; c, 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, d and e x 400 times. 



Fig. 30. a, Helotiumferruginosum, a group the nat. size ; &, three 

 cups slightly magnified ; c, a section of a cup slightly magnified ; 

 d, two asci with paraphyses ; e, six sporidia in various stages of develop- 

 ment, d and e x 400 times. 



Fig. 31. a, Helotium claro-flavum, 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, 



PLATE VI. 



Fig. 32. a, Mollisia cinerea, a group the nat. size ; 6, 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 fr.ig- 

 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 ; e, 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 ; e, 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 ; 5, a group mag- 

 nified; c, a section of a cup also magnified; d, two asci; e, seven 

 sporidia, showing variation of size, d and e x 400 times. 



Fig. 36. a, Mollisia cerastiorum, a fragment of the host plant 



