252 



RESEARCHES ON FUNGI 



In Fig. 121, A, is shown a surf ace view of a hymenium just be ore 

 pufl&ng and therefore corresponding with the radial- longitudinal 

 section shown in Fig. 120, A. In Fig. 121, A, the following points 

 may be observed : (1) the only elements in the hymenium are asci 



Fig. 122. — Sarcoscypha protracta. Semi-diagrammatic surface view of the hymen- 

 ium, about one second after puffing has taken place and all the asci have 

 exploded : p p, the paraphyses in which the asci are embedded ; e e, the empty 

 asci ; a a, the apertures of the asci, through which the ascus-jets consisting of 

 spores and drops of cell-sap were discharged ; o o, the opercula, each one 

 hinged to the upper edge of the ascus-wall. Magnification, 1143. 



and paraphyses ; (2) the paraphyses occupy at least one-half of the 

 hymenium ; (3) the uppermost spore in each ascus is pointing 

 obliquely upwards and is resting against the opercuhmi that will be 

 formed when the ascus explodes ; and (4) there is a large amount 

 of cell-sap surrounding the spores. 



In Fig. 121, B, is shown a surface view of a hymenium just after 



