ROB ROE 
R(E ROS 
ing in loam and peat ; and increased by cuttings in 
sand, under a glass, in heat. 
fintiscoat . . . White . . S. Er. S. Guiana . . 1823 
Rohbktia, Decjandolle. In honour of M. Robert, a 
Corsican botanist. Linn. 19, Or, 1, Nat. Or. Com- 
potitae. Mere weeds, of the most common culture ; 
seeds. Synonyme : 1. Hypochwru pinnatifida — R. 
pinnatlfidd 1, taraxacoides . 
RobinIa, Decandolle. In honour of Jean Robin, a 
French botanist, once herbalist to Henry IV. of 
France. Linn. 17, Or. 4, Nat. Or. Leguminosm. 
The hardy kinds of Robinia are remarkably hand- 
some when in flower, and well adapted for orna- 
menting the shrubbery. They will grow in any 
common soil ; and are increased either by layers or 
by grafting the rare species upon the common 
kinds, chiefly on R. Pseud-acacia. The stove and 
greenhouse species should be grown in a mixture of 
loam, sand, and peat ; and young cuttings will root, 
if planted in sand, under a glass. R. Pseud-acacia, 
if properly seasoned, is equally as strong and as 
durable as oak. Synonymes : 1. R hybrida, amhigua, 
echinata. 2. grandijlora, macropRylla. 3. amor- 
phafolia. 4. monstrosa. 5. penduta. 6. procera. 7> 
sophorxfolia. 8. stricta. 9. iuermis. 
davurlcA ... . 5, H. De. T. Davuria . 1820 
dubiS, 1 ... Wht. red . 5, H. De. T. N. Amer. . 
guineensls . . . White. . S. £v. S. Guinea . . 1822 
hiipi'da .... Pink . . 7. H. De. S. Carolina . 1743 
macioph^llS, 2 Red . . 5, H. De. T. N. Amer. . 
n&na .... Pink . . 6, H. De. S. Carolina 
r6s6a .... Red . . 7. H. De. .S. N. Amer. . 
Pseud- Acacia . White . . 5, H. De. T. N. Amer. . 1640 
amorphiefdlia, 3 Whu red . 5, H. De. T. N. Amer. . 
crispa . . . White . . 6, H. De. T. N. Amer. . 
flore lutW . . Yellow . 5, H. De. T. 
inermls . . . White . . 5, H. De. T. N. Amer. . 
latislUqua . . White . . 6, H. De. T. 
macrophylla . White . . 5, H. De. T. N. Amer. . 
microphylla . . White . . 6, H. De. T. N. Amer. . 
monstiOsa, 4 . Wht. red . 5, H. De. T. N. Amer. . 
pendula, 5 . . Pink . . 5, H. De. T. N. Amer. . 
procSra. 6 . . Wilt, red . 5, H. De. T. N. Amer. . 
aoplioreefdlia, 7 . Wht. red . 5, H. De. T. N Amer. . 
sp^tabllis . . . White . . 5, H. De. T. France . . 
stricta, 8 . . . Wht. red . 5, H. De. T. N. Amer. . 
tortii6sa . . . White . . 5, H. De. T. 
umbracullfera, 9 ^Vhite . . 5, H. Do. T. N. Amer. . 
purpurea . . . Purple . 7, S. Ev. T. .1810 
viscOsa .... Pa. pur. . 7, H. Do. T. N. Amer. . 1 797 
Rocambole, see AltlUm ScorodoprdsQm. 
Roccklla, Decandolle. Altered from the Portuguese 
Roccha, signifying a rock ; in allusion to its place 
of growth. Linn 24, Or. 8, Nat. Or. Lichenes. R. 
tinctoria is the Orehall of the dyers, so famed for 
the flne purple colour which it yields— A. Juc^4r- 
mls, tinctdrid. 
RCchba, Decandolle. In honour of M. de la Roche, a 
botanical writer. Linn. 5, Or. 5, Nat. Or. Crassu- 
laceoe. This is a very elegant genus of succulent 
plants when in flower. They require to be treated 
in a manner similar to that recommended for the 
genus Globulea. 
Blbifldra, 1 . . . \Vhite . . 7, G. Et. S. C. G. H. . 1800 
falcAta .... Scarlet . 7. G. Ev. S. C. G. H. . 1795 
perfoliau . . . Scarlet . 7, G. Ev. S. C. G. H. .1700 
albifldra . . . White . . 7, G. Ev. S. C. G. H. . 1800 
Rocket, see Erdcd. 
Rocket, see Hlspirlt. 
Rock-bose, see CUtds. 
Rock-rose, see Convolvulus Dorgcnldm. 
RodioIa, see Seridd. 
Rodriocbzia, Ruiz and Pavon. In honour of Em. 
Rodriguez, a Spanish physician and botanist. Linn. 
20, Or. 1, Nat. Or. Orchidaceae. These interesting 
plants may either be grown in peat, in a manner 
similar to that recommended for the species of 
Stanhopea, or be fastened on a piece of wood, and 
treated like the genus Burlingtonia ■ Synonymes: 
1. Gomeza recurva. 2. Pleurothallis coccinea. 
Barker! .... Green . . 1, S. Eph Brazil . . 
crisps Green • • S. Epi. Brazil , . 
laxifltirS «... Pa. gm. . S. EpL Brazil . . 
planif6lI2 ... S. Epi. Brazil . . 
recurvA, 1 • . . Yellow . 6, S. Epi. Brazil . . 1824 
secunda, 2 . . . Red . . 7, S. Epi. Trinidad . 1820 
RoELiJt, Linn. In honour of William Roell, pro- 
fessor of anatomy at Amsterdam. Linn. 5, Or. 1, 
Nat. Or. Campanulacece. Elegant plants when in 
flower. The soil best tidaptedfor them is a mixture 
of sandy loam and peat. They are readily increased 
by seed ; or young cuttings will root freely planted 
in the same kind of soil, with a glass over them. 
Synonymes: 1. A. JUiformis 2. Zygophyllum fruti- 
culotum. 
ciliata .... WhL pur. 7, G. Ev. S. C. G. H. . 1774 
decurrenz . . . Blue . . 8, F. A. C. G. H. .1 787 
elegans . . . Purple . 2, S. Ev. S. C. G. H. . 1836 
fruticuloi.4 . . Yellow . 7, G. Ev. S. N. HoU. . 1820 
muacosA . . . Blue . . 8, G. Her. P. C. G. H. . 1802 
squarrosS . . . White. . 7, G. Ev. S. a G. H. . 1787 
Bergn, 1 . . Blue . . 8, G. Ev. S. C. G. H. . 1816 
R<epera, a. Jussieu. In honour of J. Roeper, a 
writer on the Euphorbias of Germany. Linn. 8, 
Or. 1, Nat. Or. Zygophyllaceoe. Ornamental little 
plants, growing freely in loam, peat, and sand ; 
and readily increasing by young cuttings or seeds. 
A. aurantiaca flowers beautifully' when planted out 
in the open border. Synonyme: 1. Zygophyllum 
fruticulosum. 
aurantiAcA . . .Or. yel. . 8, N. Holl. . 1337 
fruticulosA, 1 . . Yellow . 7, G. Ev. S. N. Holl. . 1820 
Rolandra, Rottboell. In honour of Daniel Rolander, 
a pupil of Linnaeus, who visited Surinam. Linn, 
19, Or. 5, Nat. Or. Compositce. This plant thrives in 
loam and peat, and is readily increased by cuttings, 
argentea . . . White. . 7, G. Ev. S. W Ind. , 1714 
RShuea, see Tupfstrd. 
Romebia, Medicus. In honour of John James Romer, 
M.D., professor of botany at Landshut; died 1820. 
Linn. 13, Or. l,Nat. Or. Papaveraceae. Very pretty 
annuals. The seed has only to be sown in the 
open border early in spring. Synonyme: 1. Cheli- 
donium hybridum. 
hybrldl, 1 . . . Purple . 6, H. A. Britain . . 
refractA .... Violet . . 6, H. A. Tauria . . 1823 
R0XDE1.ETIA, Blame. In honour of William Rondelet, 
M.D., a famous natural historian of Montpellier. 
Linn. 5, Or. 1, Nat. Or. Cinchonacece. Shrubs, well 
worth cultivating. They should be grown in a 
mixture of loam, peat, and sand ; and cuttings will 
root freely if planted in sand, under a glass, in heat. 
americAuA . . . White. . 8, S. Ev. S. W. Ind. . 1752 
hinuU .... Yellow . 7, S. Ev. S. Jamaica . 1820 
hirtA .... Pink . . 7, S. E». S. Jamaica . 1776 
lavigAU . . . White . . 7, S. Ev. S. W. Ind. . 1790 
laurifOlIA . . . White . . 7, S. Ev. S. Jamaica . 1824 
odorAtA .... Red . . 7, S. Ev. & W. Ind. . 1836 
paniculAtA . . . White. . 7, S. Ev. S. £. Ind. . . 1820 
racemdsA . . . White. . 7, S. Ev. S. Jamaica . 1820 
speciOsA . . . Scarlet . S. Ev. S. Havannah . 1830 
thyrsoIdAA . . . 'White. . 7, S Ev. S. Jamaica . 1819 
tomentOsA . . . 'White. . 7, S. Ev. S. Jamaica . 1819 
Ropala, Auhlet. From Roupala, its aboriginal name. 
Linn. 4, Or. 1, Nat. Or. Proteacea. Ornamental 
trees, growing well in a mixture of loam and peat ; 
and increasing by cuttings, in sand, imder a glass, 
in heat. 
dentatA .... Green . . 6, G. Ev. T. S. Amer. . 1802 
mAdiA .... . 5, G. Ev. T. Guiana . .1823 
sessilifallS . . . Green . . G. Ev. T. Guiana . . 1803 
Rope-grass, see RSstiO. 
RQg^ Linn. From the Celtic rhod, red; in reference 
""“TO^e prevailing colour of the flowers. Linn. 12, 
Or. 3, Nat. Or. Rosaceae. The name of this genus car- 
ries with it a charm as well for the beauty as the 
unrivalled fragrance of its flowers, and it has justly 
been the theme of writers, from the remotest 
antiquity, as a favourite and universal object of 
culture among all civilised nations. The plants 
vary in size, and the colours are red, white, pur- 
ple, yellow, striped, or of almost numberless shades 
and mixtures, from single to semi-double and double* 
As it would be impossible to give a standard list ot 
the most improved cultivated kinds, owing to the 
number of superior sorts raised annually from seed, 
and many of the varieties being annually lost, 
going out of repute, or entirely changing their 
appearance from time and local circumstances ; we 
would on that account recommend those who wish to 
form a selection of these popular plants, to resort to 
the latest and best catalogue of Roses now actually 
in cultivation ; such as that of Messrs. Rivers and 
Son, of Sawbridgeworth, Hertfordshire, which is 
not only the best as a catalo^e, but as containing 
other particulars worthy of the cultivator’s con- 
sideration. The rose is propagated by every method 
capable of being applied to ligneous plants; by 
t 272 7 
