NOL 
OMP 
such as repotting a tolerably good plant : 
about the middle of September, and en¬ 
couraging it to grow a bit, flowers may 
be had through a great part of the winter. 
NOLANA (Linn.) Nat. Ord. Nola- 
naceM Showy annuals, with large blue 
flowers, quite hardy, and only requiring 
to be sown in rich earth where they are 
to bloom. 
NUPHAPi; (Sibthobp.) Nat. Ord. 
Nymphaeaceae, These pretty aquatics 
are all hardy, having bright yellow 
flowers, and are very ornaDientai to lakes, 
ponds, or cisterns of water. 
NUTTALLIA (Dickson.) Nat. Ord. 
Malvaceae. Handsome, hardy herba¬ 
ceous plants, with showy pink, purple, 
or red blossoms ; they are well suited 
for the beds and borders of the American 
gardens, as they prefer a light peat soil. 
NYMPHiEA (Linn.) Nat. Ord. 
Nymphaeaceae. Nothing surely can ex¬ 
ceed the simple elegance, the unpretend¬ 
ing grandeur of these beautiful aquatics. 
N. alba , the “Naiad of our streams/ 5 is 
not unfrequently seen displaying its pure 
white chalices on the margin of a retired 
river, or gaining confidence in quiet 
water, extending its rliizomas towards 
the middle or quite over the stream. 
The exotic species, N. ccsrulea , N. lotus , 
and N. rubra , are also frequently met 
with in our gardens, luxuriating in the 
stove; while the almost equally beautiful 
~N. renifornis contents itself with the 
cooler atmosphere of the greenhouse. 
All of them should be planted in tubs of 
loam, leaving five or six inches for the 
w'ater, which should be changed before 
it becomes foul. 
GDONTOGLOSSUM (Humboldt 
and Kunth.) Nat. Ord. Orchidacece. 
A group of lovely epiphytes, most of 
them of comparative recent introduction. 
Being natives of the western hemisphere, 
they do not require a very high tempe¬ 
rature, but delight in a moist atmosphere, 
kept salubrious by the frequent admission 
of fresh air. The soil for them, and their 
general management, should be assimi¬ 
lated to that recommended for the genus 
Cattleya. Odontoglossum grande requires 
a little tact to grow and flower it well; 
the new shoots are usually protruded at 
the beginning of summer, when it should 
be encouraged to grow freely until the 
apex of the new pseudo-bulbs can be 
distinctly seen emerging from the sheath¬ 
ing leaves which proceed from its base, 
and are the first evidence of growth in 
all the species; at this time the plant 
must be kept in a low temperature of 
about 55°, or not exceeding 60°, with 
only a moderate supply of water, to in¬ 
duce it to form the desired flower-stems. 
The slightest additional excitement at 
this particular period invariably prevents 
its blooming, and thus the plant con¬ 
tinues growing year after year without 
other effect than a mere increase of its 
size; but checked, as it were, in the 
manner described, it will as certainly dis¬ 
play its gorgeous blossoms in the autumn 
of every season. 0 . Rossii , citrosmum, 
Cervantesii , pulcliellum, Insleayi, and 
grande , should be in every collection. 
(ENOTHERA (Linn.) Nat. Ord. 
Onagracece. The whole of this genus 
are favorites in the flower garden, as 
they are easily grown, and prolific of 
large highly-coloured flowers. The per¬ 
ennial kinds should be grown in rich 
loamy soil, and are easily increased by 
division or cuttings from'the root-stock; 
the a nn ual species should be sown where 
they are to bloom, and those which are 
biennial should be raised in summer on 
a spare piece of ground in the reserve 
garden, and in the following spring may 
be planted out where they are desired to 
flower. Macrocar pa, speciosa, and taraxa- 
cifolia are very generally grown for bed¬ 
ding purposes, being dwarf, and having 
large flowers; the first yellow and the 
latter white. The genus is popularly 
known as the evening primrose. 
OMPHALODES (Toubnefobt.) 
Nat. Ord. Boraginacece. Showy border 
plants, closely allied to Cynoglossum, 
and of the easiest culture; all the species 
succeed in almost any position, though 
they prefer a moist soil; the perennial 
kinds increase rapidly by means of their 
spreading roots, • and the annuals pro¬ 
duce abundance of seeds, which only re¬ 
quire to be sown in March where the 
plants are to bloom. All the species 
