A Dictionary of Choice Ferns. 
255 
M O H R I A — continu ed. 
narrowly-winged rachis into leafits of a soft, papery tex- 
ture, deeply cleft and again conspicuously toothed. The 
fertile fronds are longer than the barren ones, from which 
they also differ by being conspicuously contracted and by 
having their leaflet® rounded at the edges : this contrac- 
tion of the lobes over the spore masses gives them a very 
elegant appearance. The rachises and the under-surface 
of both kinds of fronds are more or less densely clothed with 
very narrow scales of a pale brown colour. When bruised, 
the plant emits a strong odour of frankincense. ill. c. 
achiUecefolia is a form much Tesembling the leaves of the 
Yarrow {Achillea millefolia). It is much dwarfer in habit 
than the type. 
M. thurifra§:a. 
Synonymous with ill. caffrorum. 
NEPHRODIUM. 
In this immense genus of Buckler Ferns are 
included species remarkable for their decorative 
qualities, and others unequalled for their hardiness 
Necessarily they have a very wide geographical 
range : in it may be found species suitable for the 
tropical Fernery, for the greenhouse, and even for 
the open air. Plants of all dimensions are found 
amongst the ]N"ephrodiums. AVhatever their size, 
however, all are of easy culture, whether planted out 
on the rockery, where all IN'ephrodiums seem to 
thrive, or grown as pot plants. They, however, 
require a richer soil than most other Ferns. 
The more robust kinds thrive in a mixture of 
loam and peat, in about equal proportions, with a 
small part of cow-manure previously dried and well 
mixed together, and an additional sprinkling of 
silver sand ; for the smaller and consequently slower- 
growing species, less loam and more sand should be 
used. 
Most Nephrodiums, especially the strong- 
growing kinds, are quite indifferent as to shading; 
a little sunshine acts as a strengthening agent, 
making their foliage much more lasting during the 
winter months than could otherwise possibly be the 
case. They all require a good supply of water at the 
roots all the year round, but principally during the 
