autiful rose colour,
and at their best from the middle of May till the middle of June. S.
bella alba has white flowers.

S. BLUMEI.--Blume's Spiraea. Japan. This is a Japanese species, growing
4 feet or 5 feet high, with small, ovate, bluntly-pointed leaves, and
white flowers arranged in compact terminal cymes. It is a good and
worthy species for ornamental planting.

S. BULLATA (_syn S. crispifolia_.)--Japan. This will ever be accounted
valuable for the rock garden, owing to its very dwarf habit and extreme
floriferousness. It bears tiny bunches of bright rose-coloured flowers,
and these look all the more charming owing to the miniature size of the
shrub, its average height being about 12 inches. A very interesting and
valuable rock shrub, and one that no doubt about its perfect hardihood
need be entertained.

S. CANA.--Hoary-leaved Spiraea. Croatia, 1825. This is a small spreading
shrub that rarely rises to more than 18 inches in height, with small,
ovate, hoary leaves, and pretty white flowers arranged in corymbs. For
rockwork planting it is one of the most valuable species, growing freely
and producing its showy flowers in abundance. Quite hardy.

S. CANTONIENSIS (_syn S. Reevesiana_).--Reeve's Spiraea. Japan, 1843. An
evergreen or sub-evergreen species, growing 3 feet high, with lanceolate
leaves on long footstalks, and large, pure white flowers arranged in
terminal corymbs, and placed on long peduncles.

S. CHAMAEDRIFOLIA (_syn S. ceanothifolia_).--Germander-leaved Spiraea.
South-eastern Europe to Japan, 1789. Grows about a yard high, with
ovate, pubescent leaves, and white flowers. It varies widely in the
shape and size of leaves. S. chamaedrifolia ulmifolia (Elm-leaved
Spiraea) a twiggy shrub, 3 feet high, with broad leaves and white
flowers, is from Siberia. S. chamaedrifolia crataegifolia
(Hawthorn-leaved Spiraea) is of stout, half-erect growth, with rather
stiff glaucous leaves that are oval in shape, and bright red or pink
flowers in fastigiate panicles. From Siberia 1790, and flowering at
mid-summer.

S. DECUMBENS (_syn S. nana_).--Decumbent Spiraea. Tyrol. This is the
smallest-growing of the shrubby Spiraeas, rarely attaining to a greater
height than 12 inches. It is a neat growing plant, with small oval
leaves, and white pedunculate flowers. For planting on the rockwork or
in the front line of the shrubbery, this is an invaluable shrub, and
soon forms a neat and pretty specimen. It is perfectly har