22 Ferns and Fern Culture. 
ribs, borderéd. by white, with splashes of red merging 
into green. But it is in the young fronds of many 
species that the most lovely variation is seen. Some are 
produced a deep crimson, which gradually changes to 
pale green, one plant bearing several fronds, all of 
different sbades, at the same time. Others are produced 
PTuRIS ARGYREA. 
(Showing variegation of fronds.) 
bright red, others deep pink, light pink, rose, ruby, deep 
brown, pale brown, and other delicate and delightful 
tints. Some are almost blue, being covered from foot to 
tip by a remarkable glaucous bloom, others are bronzy 
green, while several of the Selaginellas are metallic blue, 
8. Willdenovii having the most remarkable iridescent 
