24 



Explanation of Plate III, 



Mahinoa crispaia, (St.) Miyake. 



Fig. 1. Female plant; Q, a group of antheridia covered by an involucre; 

 sp. sporogoniun ; ca, calyptra ; in, involucre ; nat. size. 



Fig. 2. Longitudinal median section through the thalius bearing archegonia 

 ( $ ) ; in, involucre ; r, rhizoids ; x 30 (about). 



Fig. 3. Two full-developed elaters ; x 200. 



Fig. 4. Eipe spores ; a, surface view ; b, optical section ; x 200. 



Fig. 5. Male plant, bearing antheridial groups ; two younger ones ( J ) 

 and an old one ( £'), whose antheridia have been emptied last 

 year ; nat. size. 



Fig. 6. Longitudinal median section througth the thalius bearing an an- 

 theridial group ; ( $ ), antheridium ; x 25. 



Fig. 7. Spermatozoids ; a, in free motion ; b, enclosed in the mother- 

 cell ; c, partly out of the mother-cell ; fixed with osmic acid 

 vapour and stained with fuchsiniodinegreen ; x 900 (4 x T \, 

 Zeiss). 



