A Dictionary of Choice Ferns. 
275 
N. chrysophylla. 
A synonym of N. flavens. 
N. dealbata. 
A very elegant little plant, of slender habit ; it is a 
native of North America, and requires cool treatment. The 
fronds, borne on slender, wiry, chestnut-brown stalks 4in. 
to 6in. long, are deltoid. Sin. to 4in. each way, and tripin- 
nate, their distant leaflet® being again divided into blunt, 
oblong lobes of a somewhat leathery texture ; they are pale 
green on their upper surface, and coated with pure white 
p o wde r ben e ath . 
N. flavens. 
An extremely elegant. South American species, better 
known in gardens under the name of N. chrysophylla, is 
one of the most popular of the whole genus. The 
plant is graceful in appearance, and the bright golden 
powder with which the under-surface of its abundant 
Adiantum-like fronds is covered, forms a pleasing contrast 
with the slender, black, shining stalks on which they are 
borne. It thrives best in a basket, and should be kept close 
to the light and in a warm house, at least during the 
winter. The tripinnate fronds are borne on demsely-tufted, 
glossy, chestnut-brown stalks 4in. to Sin. long, are produced 
from a thick rhizome covered with dark brown scales; they 
are 4in. to 9in. long, 2in. to 4in. broad, broadly triangular, 
and furnished with leaflets disposed somewhat far apart. 
The leafits are somewhat loosely set, nearly wedge-shaped, 
of a slightly leathery texture, and of a bright green colour 
on their upper surface, while their under-side is densely 
covered with a bright yellow powder. The brown sori 
extend from the edge nearly to the midrib. 
N. Hookeri. 
This thoroughly distinct, greenhouse species, native of 
North America, must not be confounded with N. Hookeri of 
Lowe, which is only a form of N. nivea. In general appear- 
ance this pretty little plant much resembles the better- 
known Gymno gramme triangularis. Its five-pointed, star- 
shaped fronds (Fig. 109), about 3in. each way, are produced 
from a short-creeping rootstock, at the end of which the 
wiry, reddish-brown, smooth, shining stalks, about Gin. 
long, are clustered. The frond consists of a middle portion 
of broadly-triangular form, supported on a short but nar- 
rowly-winged stalk, and of two lateral divisions, which are 
stalkless. The upper surface of the fronds is smooth and 
of a dull, rather dark shade of green, while the powder 
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