fastuosa.
" Lady Stanley.
" Leopoldii.
" lilacina plena.
" paeoniaeflora.
" puniceus plenus.
" rosea plena.
" rubra plena.
" spectabilis plena.
" violacea.

HIPPOPHAE.

HIPPOPHAE RHAMNOIDES.--Sea Buckthorn, or Sallow Thorn. Though generally
considered as a sea-side shrub, the Sea Buckthorn is by no means
exclusively so, thriving well, and attaining to large dimensions, in
many inland situations. The flowers are not at all conspicuous, but this
is amply compensated for by the beautiful silvery-like leaves and wealth
of fruit borne by the shrub. In not a few instances, for fully a foot in
length, the branches are smothered with crowded clusters of bright
orange berries, and which render the shrub during November and December
both distinct and effective. It does best in sandy soil, and is readily
increased from suckers, which are usually plentifully produced by old
plants. For sea-side planting it is one of our most valuable shrubs,
succeeding, as it does, well down even to high water mark, and where the
foliage is lashed with the salt spray.

HOLBOELLIA.

HOLBOELLIA LATIFOLIA (_syn Stauntonia latifolia_).--Himalayas, 1840. An
evergreen climbing shrub that is more often found under glass than out
of doors. In the South of England, however, it is quite hardy against a
sunny wall. It grows 12 feet high, with shining green leathery leaves,
and fragrant purplish-green flowers. H. latifolia angustifolia has
decidedly narrower leaves than the species, but is in no other way
different.

HYDRANGEA.

HYDRANGEA ARBORESCENS.--North America, 1736. This is a plant of large
growth, but the flowers are greenish-white, and by no means conspicuous.

H. HORTENSIS (_syn Hortensia opuloides_).--China, 1790. This is an
old-fashioned garden shrub that is only hardy in the south and west of
these islands and in the vicinity of the sea. In some of the forms
nearly all the flowers are sterile, the calyx-lobes being greatly
expanded, and in others the outer flowers only are sterile. According to
the nature of the soil the flowers vary much in colour, some being pure
white, others pink, and others of varying shades of blue. There are some
very beautiful and distinct varieties, such as H. hortensis japonica; H.
hortensis Otaksa, with large panicles of sterile blue flowers; H.
hortensis rosea-alba, with large rosy flowers; H. hortensis Thom