t in a star-like
manner, as in C. grandiflorus, and they are tinged with crimson; the
stem of the plant shows a bluntly triangular section, and the angles are
marked with a row of distant spines instead of the clusters of spines
and wool in C. grandiflorus. In all other particulars, these two species
are almost identical, so that where space is limited either the one or
the other will be sufficient to represent both. C. Lemairii was
introduced into England through Kew, whither a plant was sent in 1854
from the Royal Botanical Garden of Hanover, under the name of C.
rostratus. It blossoms in the Kew collection every June, the flowers
lasting for several hours after sunrise. Seeds are freely ripened by
this plant. Native of Antigua (?)

C. Macdonaldiae (Mrs. MacDonald's); Bot. Mag. 4707.--A magnificent
Cactus, producing flowers often 14 in. in diameter, with the same
brilliant colours as are described under C. Lemairii. The stems are
slender, cylindrical, not ridged or angled, bearing at irregular
intervals rather fleshy tubercles instead of spines, and branching
freely. Its flowers are produced on both young and old stems, several
crops appearing in the course of the summer when the treatment is
favourable. Roots are not so freely thrown out from the stems of this
kind, and as the latter are slender and very pliant, they may be trained
round a balloon trellis, so as to form handsome pot specimens, which,
when in flower, may be carried into the house, where their large,
beautiful flowers may be enjoyed. Writing of this species over thirty
years ago, Sir Wm. Hooker said: "Certainly, of the many floral
spectacles that have gratified lovers of horticulture at the Royal
Gardens, Kew, of late years, few have been more striking than this to
those who were privileged to see the blossoms in bud and fully expanded.
The plant was received from Honduras through the favour of Mrs.
MacDonald, and was planted at the back of the old Cactus-house, and
trained against a wall. It first showed symptoms of blossoming in July,
1851. A casual observer might have passed the plant as an unusually
large form of the 'night-blooming Cereus' (C. grandiflorus), but the
slightest inspection of the stems and flowers, the latter 14 in. in
diameter by 14 in. long, shows this to be a most distinct species."

C. Napoleonis (Napoleon's); Bot. Mag. 3458.--This is very like C.
grandiflorus, and is slightly and not very agreeably perfumed. The
flowers someti