47 
plate at . 
• 7 . Lower barren pinna from a large frond, upper eide, natural size. 
0 . Fertile pirpaa from the seme frond, underside, natural size. 
9 . Pinnule, x 3 diam 
JO. ludusium, x 10 »l\am. 
U Scales from middle part of the frond, x 3 diam. 
