Explanation of Plate XVII. 



Ryparobius pelletieri C Cr. ) Sacc. 



Several cups, natural size. 

 Mature and immature cups, x 10. 

 Ascus and paraphyses, x 411. 

 Ascus to show operculum, x 400. 

 One spore with membrane, x 1000. 



Ryparobius crustaceus (Fck/.) Rehm. 



Fig. ii, a. Plants, about natural size. 



Fig. ii, b. Plants, x 10. 



Fig. ii, c. One plant to show projecting asci, x 30. 



Fig. ii, J. Ascus and paraphyses, x 1000. 



Fig. ii, e. Ascus to show operculum, x 800. 



