3° 2 EXPLANATION OF PLATES. 



Plate 6. Fig. 81. Riccia nigrella, frond enlarged (Carrington). 

 Plate 7. Fig. 82. Nardia Carringtonii, leaves (Carrington). 

 ,, 83. Acrobolbus Wihoni, portion of stem and 



leaves (Carrington). 

 ,, 84. Gymnomitrium crassifolium. stem and 

 leaves (Carrington). 

 85. Nardia Mulleri, var. ligurica, perianth and 

 leaves (Notaris). 

 ,, 86. Fossombronia angulosa, portion of stem 

 and leaves. 



„ 87. Riccia glancescens, two fronds. 

 ,, 88. Metzgeria hamata, frond. 



89. Metzgeria conjugata, fronds. 



90. Aneura pinnatifida, frond. 



91. Amura palmata, part of frond (Stephani). 



92. Riccia tumida, frond and enlarged portion 

 (Lindenberg). 



93. Lunularia vulgaris, magnified receptacle 

 (Taylor). 



,, 94. Riccia crystallina, frond, h var. #. 



