sori lap over the margin of the frond and give to it a monili- 
form character. 
It is remarkable that no good recent representation has been 
anywhere given of this common plant, but Plumier’s is more 
accurate than the greater number of his fern-figures. 
Prats 18. Caudex and sterile and fertile fronds of Polypodium (Craspedaria) 
piloselloides, .,—natural size. Fig. 1. Apex of a sterile frond, showing the 
venation. 2. Portion of a fertile frond, showing the position of the sori, and 
more distinctly the frondal scales and the venation. 3. Capsule. 4. Stipitate 
scale from among the capsules of the sori :—all more or less magnified. 
