CULTIVATION. 
353 
(three or four years) become weak, producing small 
fronds ; it therefore becomes necessary to remove the 
older parts and re-pot the younger portions in fresh 
soil. 
Yery interesting and natural examples may also 
be had by placing common cylindrical red chimney- 
pots or drain-pipes in a pan wider by two inches than 
the base of the cylinder, — this space to be filled with 
soil and planted ; the rhizomes will soon become 
attached to the surface of the cylinder and in time 
will cover the whole, forming a handsome pillar of 
fronds. In order to maintain a proper degree of 
moisture, a pan of water may be fixed inside the 
cylinder, and if a piece of woollen cloth is placed in 
the water, in contact with the cylinder, a constant 
moisture will be kept up congenial to the plants. 
The top of the cylinder is also useful for placing 
on it some of the pendulous species ; for instance, 
Pliymatodes geminata, Goniophlebium dissimile, G. 
nerujolium, Campy loneur on angustifolium, Elaplioglos- 
sum Herminieri. 
In Schellolepis suhauriculata and S. verrucosa the 
fronds are long and pendulous ; this necessitates the 
plants being placed in an elevated position, such as 
suspended from the roof of the house in shallow wire 
baskets, the inside of which should have a lining of 
sphagnum moss, which assists to retain moisture, and 
also gives a clean and neat appearance. Plants of 
these two species thus treated have at Kew produced 
fronds 12 feet in length, hanging down in a very 
graceful manner. There are several other Epiphytes 
of special interest, such as the species of Vittnria 
and Haplopteris , which hang down from trees like 
