i i. 
i a +, 
Ww, 
NIGELA. 
the seeds being put into the ground | 
singly, and at least three feet 
apart. 
Nicotia‘na.— Solanicee.— The 
““*Pobavco. All the different kinds 
of ‘Tobacco have showy flowers; 
but the handsomest species are N. 
Tabacum, the Virginian or com- 
mon Tobacco, N. noctifléra, N. 
multivalvis, and N. longiflora. All| 
these are annuals, and their seeds 
should be raised on a slight hotbed 
or warm border; and the plants, 
when in their second pair of leaves, 
should be transplanted ee bed of 
light rich soil, where t should 
be planted three feet apart every 
way. While the plants a young, 
the joints of the leaves should be 
frequently examined, in search of a 
ar €aterpillar which is frequently found 
_ there, and which, if not removed, 
_ will eat off the points of the shoots, 
and consequently destroy the beau- 
» bys of the plant. WN. ristica, the | 
_ common, or English Tobacco, the | 
leaves of which are generally used | 
for making tobacco-water, &c., 
should never be grown in a garden, 
as the flowers are of a dirty green- 
ish yellow, and the whole plant is 
covered with clammy hairs, ex- 
tremely disagreeable to the touch. 
Nieremsbe’roia. — Solanaceae. — | 
here are four species of Nierem- | 
bergia, all natives of South Amer- 
ica; viz., N. gracilis, N. aristata, 
WN. filicailis, and N. calycina, all | 
of which are pretty little green- 
house plants, with whitish flowers, 
but not at all showy. 
and Dr. Graham having at first 
supposed that some of the kinds of | 
Petunia belonged to Nierembergia, 
great confusion has arisen. The 
Nierembergias should be grown in 
eat and sand, and kept regularly 
fatered. 
Nicr’ta.— Ranunculaceae. —The 
ennel-flower, or Devil in a Bush. 
s . 
298 
| by their leafy involucres. 
I have been | 
thus particular in enumerating the | 
. | 
kinds, because from Professor Don | 
ee 
NOLANA. 
Annual plants, with showy flowers, 
which are, however, almost hidden 
NN. his- 
panica is the handsomest species. 
They only require sowing in March 
or April in the open border; or they 
may be sown in autumn, as they 
will stand the winter without protec- 
tion, and will thus be ready to flower 
early in summer. 
NicuTsHaDE.—See Sora‘num. 
Nisso‘t1a. — Legumindse.—The 
Grass Vetch. A rare British plant, 
_with grass-like leaves and bright 
crimson single flowers, which looks 
very well on rock-work, where it 
can be kept moist. 
Nirra‘ria. — Ficoidee. — Low 
shrubs with white flowers, which 
| are very hardy, and will grow well. 
in situations exposed to the sea. In 
gardens, the ground in which they 
_grow should be occasionally watered 
with water in which saltpetre has 
been dissolved. 
Nirrate or Sopa.—This sub- 
| stance, which is found in great 
abundance as a natural production 
/of the earth in South America, is a 
| very powerful manure ; but it must 
_ be applied carefully, or it will make 
| the leaves look brown and shrivelled. 
It should always be mixed well with 
the soil in which plants are to be 
placed, and not laid on the surface 
of soil in which plants are already 
growing. When it produces its 
proper effect, it gives great vigour 
_to the plants, and renders their 
leaves of an intensely deep green. 
Nortserre Rose.—Roses which 
bear their flowers in bunches, and 
which were named from a nursery 
'man of the name of Noisette, in 
Paris, who raised the first from seed 
of the common China. For the 
culture, see Ro'sa. 
Noxa‘na.— Nolandcee.—Trailing 
annual plants, with pretty blue 
flowers, that only require sowing in 
March in the open border. N. airi- 
plicifolia, the handsomest species, 
