large pure-white flowers. All the species of Gum Cistus, or Rock Rose
as they are very appropriately named, will be found to succeed best
when planted in exalted positions, and among light, though rich, strong
soil. They are easy of propagation.


CITRUS.

CITRUS TRIFOLIATA.--Japan, 1869. This is a singular low-growing shrub,
with ternate leaves, spiny branches, and fragrant white flowers. It is
hardy in many English situations, but does not fruit freely, although
the orange-blossom-like flowers are produced very abundantly. A pretty
little glossy-leaved shrub that is well worthy of attention,
particularly where a cosy corner can be put aside for its cultivation.


CLADRASTIS.

CLADRASTIS AMURENSIS.--Amoor Yellow Wood. Amur, 1880. This is a shrub
that is sure to be extensively cultivated when better known, and more
readily procured. It has stood uninjured for several years in various
parts of England, so that its hardihood may be taken for granted. The
pretty olive-green of the bark, and the greyish-green of the leathery
leaves, render the shrub one of interest even in a flowerless state. In
July and August the dense spikes of white, or rather yellowish-white
flowers are produced freely, and that, too, even before the shrub has
attained to a height of 2 feet. It is well worthy of extended culture.

C. TINCTORIA (_syn C. lutea_ and _Virgilia lutea_).--Yellow Wood. North
America, 1812. This is a handsome deciduous tree that does well in many