142 Narrow-Leaved Chain-Fern 
soriferous. The petiole lengthens, and both petiole and rachis 
become stouter and dark-colored. 
This fern is usually included in the genus Woodwardia, at 
least in America, but appears sufficiently distinct to warrant 
the restoration of Presl’s genus Lorinseria, of which it is the sole 
representative. 
