s done well, a specimen in the Knap Hill
Nursery, Surrey, being 30 feet high, and with a dense rounded head. The
flowers are very beautiful, being of a waxy white, and produced
abundantly. It wants a free rich soil, and not too exposed site.

OZOTHAMNUS.

OZOTHAMNUS ROSMARINIFOLIUS.--Australia, 1827. A pretty little Australian
Composite, forming a dense, twiggy shrub, with narrow, Rosemary-like
leaves, and small, whitish, Aster-like flowers which resemble those of
its near relative, the Olearia, and are produced so thickly that the
plant looks like a sheet of white when the blooms are fully developed.
It flowers in June and July. In most parts of the country it will
require protection, but can be classed as fairly hardy. Cuttings root
freely if placed in sandy soil in a cool frame.

PAEONIA.

PAEONIA MOUTAN.--Moutan Paeony, or Chinese Tree Paeony. China and Japan,
1789. A beautiful shrubby species introduced from China about one
hundred years ago. The first of the kind introduced to England had
single flowers, and the plant is figured in Andrews' _Botanists'
Repository_ (tab. 463) under the name of P. papaveracea. The flowers are
white with a dark red centre. In the _Botanical Magazine_ (tab. 2175),
the same plant is figured under the name of P. Moutan var. papaveracea.
This is perfectly hardy in our gardens, and is the parent of many
beautiful and distinct varieties, including double and single white,
pink, crimson, purple, and striped.

PALIURUS.

PALIURUS ACULEATUS (_syn P. australis_).--Christ's Thorn, or Garden
Thorn. Mediterranean region, 1596. A densely-branched, spiny shrub, with
small leaves, and not very showy, yellowish-green flowers. It grows and
flowers freely enough in light, peaty earth, but is not very hardy, the
tips of the branches being usually killed back should the winter be at
all severe.

PARROTIA.

PARROTIA PERSICA.--Persia, 1848. Well known for the lovely autumnal
tints displayed by the foliage when dying off. But for the flowers, too,
it is well worthy of culture, the crimson-tipped stamens of the male
flowers being singularly beautiful and uncommon. In February it is no
unusual sight to see on well-established plants whole branches that are
profusely furnished with these showy flowers. For planting in a warm
corner of a rather dry border it seems to be well suited; but it is
perfectly hardy and free of growth when suited with soil and site. It is
as yet rare in cultivation,