Quihou.
Glorie de Belgique.
Gloria Mundi.
Gueldres Rose.
Honneur de Flandre.
Imperator.
Jules Caesar.
La Superbe.
Louis Hellebuyck.
Madame Baumann.
Marie Verschaffelt.
Mathilde.
Meteor.
Nancy Waterer.
Ne Plus Ultra.
Optima.
Pallas.
Queen Victoria.
Reine des Belges.
Remarquable.
Roi des Belges.
Roi des Feux.
Sinensis rosea.
Sulphurea.
Triumphans.
Unique.
Viscocephala.

Double-flowered Rhododendrons:--

Bijou de Gendbrugge.
Graf Von Meran.
Heroine.
Narcissiflora.
Louis AimEe Van Houtte.
Mina Van Houtte.
OphiriE.
Van Houttei.

RHODOTHAMNUS.

RHODOTHAMNUS CHAMAECISTUS (_syn Rhododendron Chamaecistus_).--Ground
Cistus. Alps of Austria and Bavaria, 1786. A very handsome shrub, of
small growth, and widely distributed in Bavaria, Switzerland, and
elsewhere. Planted in peaty soil and in a rather damp, shady situation
it thrives best, the oval-serrate leaves, covered with white, villous
hairs, and pretty rosy flowers, giving it an almost unique appearance.
It is a charming rock shrub and perfectly hardy.

RHODOTYPOS.

RHODOTYPOS KERRIOIDES.--White Kerria. Japan, 1866. A handsome deciduous
shrub, and one that is readily propagated, and comparatively cheap. It
is distinct and pretty when in flower, and one of the hardiest and most
accommodating of shrubs. The leaves are handsome, being deeply serrated
and silky on the under sides, while the pure white flowers are often
about 2 inches across. It grows about 4 feet in height, and is a very
distinct and desirable shrub.

RHUS.

RHUS COTINUS.--Smoke Plant, Wig Tree, or Venetian Sumach. Spain to
Caucasus, 1656. On account of its singular appearance this shrub always
attracts the attention of even the most unobservant in such matters. It
is a spreading shrub, about 6 feet high, with rotundate, glaucous
leaves, on long petioles. The flowers are small and inconspicuous, but
the feathery nature of the flower clusters, occasioned by the
transformation of the pedicels and hairs into fluffy awns, renders this
Sumach one of the most curious and attractive of hardy shrubs. Spreading
about freely, this south European shrub should be allowed plenty of room
so that it may become perfectly developed.

R. GLABRA (_syns R. caroliniana, R. coccinea, R. elegans_, and _R.
sanguinea_).--Smooth or Scarlet Sumach. North America, 1726. A smaller
tree than the last, with leaves that are deep glossy-green above and
whitish beneath. The male tree bears greenish-yellow