March.'] GREEN-HOUSE — REPOTTING. 249 
which is very persistent. P. cynaroides has the largest 
flower, which is purple, green, and red. P. speciosa, P. 
umbondlis, once P. hmgifdUa, P. melaleiica, P. grand iflbra, 
P. coccinea, P. cenocdrpa, P. pollens, P. formbsa, P. mag- 
nified, P. speciosa rubra, and P. mellifcra, will afford a very 
good variety. It is almost impossible to describe their true 
colour, it being so various ; red, white, straw, brown, green, 
and purple, are most predominant, and frequently to be seen 
in the same flower. The plants must be well drained ; and 
during warm weather be careful that they are not neglected 
in water, for if they are suffered to droop, they seldom re- 
cover. For this reason the pots ought not to stand in the 
strong sun ; the plants can bear it, but to the roots it is 
injurious. (Soil No. 9.) 
Pultnseas, about forty species, pretty little dwarf-growing 
shrubs of New South Wales ; flowers, small,- leguminose, all 
yellow with a little red outside of the petals. P. subumbcl- 
Idta, P. villosa, P. obcorddta, P. argentea, P. plumbsa, P. 
flexilis, shining-leaved, fragrant; P. Candida, and P. str\cta, 
are all fine species, and esteemed in collections. The leaves 
are all small ; they require an airy exposure, and the pots 
drained. (Soil No. G.) 
Rhodochiton volubile, or Lop>lwrspermum rhodocliiton : this 
is a very fine climbing plant, with large tubular dark brown 
flowers, blooming from July to October ; it is of rapid growth, 
and is an excellent plant for the flower-garden. The plant 
must have frequent repotting to make it grow rapidly, for the 
finer it grows the more profusely it flowers. (Soil No. 12.) 
Rhododendrons (Rose tree), a magnificent genus, and 
contains some of the most superb and gigantic plants that 
adorn the green-house. At present the most admired is R. 
arbbreum, with its varieties. It has deep crimson flowers, 
with dark spots and flakes campanulated, and in large 
clusters ; leaves lanceolate, acute, rough and silvery beneath. 
R. arbbreum alhum is very rare. R. arbbreum superbum, 
flowers same shape as arbbreum, colour bright rosy scarlet; 
foliage one-third larger, but not silvery beneath ; grows freely, 
and generally thought the finest variety. R. arbbrea alta- 
Clarence is also very superb. R. arbbrea Russelidnum, 
pictum, vcniUtum, guttdtum, tigrinum, noblednum, grandi- 
flbrum, spectdbile, are all very distinct; but there are so 
many other varieties from seed that they will soon be so 
