90 BRITISH FERNS. 
much at home in our lanes and hedge-rows that their 
transplantation to a garden is always attended with 
success, and nothing can be more beautiful than their 
appearance. They even defy the impurities of the 
London suburban atmosphere, and exist for many 
years without any other care than an occasional 
watering. In the green-house they thrive still better, 
and it is almost impossible to conceive anything 
more elegant and delicate than the tracery of some 
of the more divided forms of Willdenow’s Fern. 
The more divided the frond, the less durable 3; for 
whilst the leathery, rigid and scarcely bipinnate form 
17. WILLDENOW’S FERN. Ancvrare. 
Polystichum angulare. B. F. 117. 
_ The caudex presents no characters by which I can 
distinguish it from that of the preceding. The stalk — 
is distinct, about one-fourth as long as the frond, and 
densely clothed with large reddish scales. The plant 
@ppears to prefer a horizontal to a vertical surface; 
