310 THE DICTIONARY 
OF GARDENING, 
` Robinia—continued. 
thickly beset with short prickles. 
Hybrid tree. 
R. hispida (hispid).* f. deep rose-colour, large, inodorous, in 
loose and —— — racemes. May and June. Pods 
glandular-hispid. l., leaflets eleven to eighteen, smooth, ovate or 
oblong-ovate, rounded or slightly cordate at base, tipped with a 
long bristle. Branches and stalks more or less bristly. h. 3ft. to 
ig Meat} America, 1743. Shrub or small tree. See Fig. 382. 
l, leaflets ovate. h. 25ft. 
TO) 
— — 
Fic. 382. FLOWERING BRANCH OF ROBINIA HISPIDA. 
R. h. macrophylla (large-leaved). Z., leaflets large, ovate- 
roundish. Branches and peduncles glabrous, without prickles. 
h. 10ft. An ornamental variety. 
R. jubata (bearded). A synonym of Caragana jubata. 
Pseudacacia.* Bastard Acacia; False Acacia; Common 
Locust. jl. white, fragrant, in slender, loose, pendulous racemes, 
3in. to 5in. long ; calyx spotted. April and May. Pods smooth. 
l, leaflets nine to seventeen, oblong-ovate or elliptical. Branches 
naked. h. 30ft. to 60ft. North America, 1 A tree, with 
hard and durable wood. There are many varieties of this species 
in English gardens. : z 7 
P. Bessoniana (Besson’s).* Branches thornless, This 
variety forms a compact, round-headed tree. 
R. P. crispa (curled). Z, leaflets all, or for the most part, un- 
dulately curled. R. 40ft. 
R. P. Decaisneana (Decaisne’s). 
fl. bright rosy-pink. 
1863, p. 151.) — 
(R. H. 
R. P. fastigiata —— A form with a habit similar to that 
of the Lombardy Poplar. 
R. P. inermis (unarmed). A small-growing, round-headed bush. 
It is usually grafted on tall stems of the common type. 
R. P. monophylla (one-leaved). J. reduced to a single leaflet. 
R. P. semperfiorens (ever-flowering). This variety continues 
flowering throughout the summer. (R. H. 1875, 191.) 
R. P. sophorezfolia (Sophora-leaved). l. large, somewhat re- 
sembling those of Sophora japonica. h. 25ft. 
R. P. stricta (upright). This has the general tendency to grow 
upright, but the plant is not as fastigiate as the Lombardy 
Poplar. h. 30ft. 
R. P. tortuosa (twisted). fl., racemes similar to those of the 
typo, = smaller and fewer-flowered. Branches curiously twisted. 
R. P. umbraculifera (umbrella-bearing). l., leaflets ovate. 
Branches much crowded, smooth. Head orbicular. h. 40ft. 
Other forms of R. Pseudacacia are: macrophylla, leaves long, 
and leaflets broad ; microphylla, leaves small, and leaflets narrow ; 
monstrosa, leaves — and twisted; pendula, shoots slightly 
drooping ; procera, , and vigorous-growing ; spectabilis, leaves 
large, shoots straight and vigorous. 
R. viscosa (clammy).* i rose-colour, crowded into roundish, 
erect racemes, nearly inodorous. May and June. Pods glandular- 
viscid. 1, leaflets eleven to fifteen, ovate and oblong, obtuse or 
—— cordate at the base, paler and pubescent beneath, tipped 
with a short bristle. Branches, — &c., glandular-viscid. 
h, 20ft. to 40ft. North America, 1797. Tree. (B. M. 560, under 
— a — 1 is either a form of this 
speci e characteristi idi i 
pocen n a viscidity, or a hybrid between 
ROBIN’S PINCUSHION. A common name for 
the Rose Bedeguar. 
ROBIQUETIA. A 
(which see.) 
ROCAMBOLE (Allium Scorodoprasum). A hardy 
perennial, cultivated for the use of its bulbs in a some- 
what similar way to those of Garlic. Increase is effected 
by dividing the bulbs which form, annually, at the root, 
: and also on the tops of the stems. When 
separated singly, these should be planted, at 
the end of February or in March, 8in. apart 
and about 2in. deep. So soon as the leaves 
decay, lift and dry the bulbs in the sun; they 
will then be ready for storing for future use. 
ROCHEA (named in honour of M. de la- 
Roche, a French botanist). Syn. Kalosanthes. 
ORD. Crassulacee. A small genus (about four 
species) of small, greenhouse, shrubby succu- 
lents, confined to South Africa. Flowers white, 
yellow, pink, or scarlet, rather large, aggre- 
gated in corymbose-capitate cymes; calyx five- 
parted or five-fid; corolla salver-shaped, its tube 
longer than the calyx, the limb five - parted, 
spreading; stamens five, included. Leaves 
opposite, connate at base, oblong, obovate, or 
lanceolate. For culture, see Crassula. 
coccinea (scarlet). This is the correct name of 
the plant described in this work as Crassula coccinea. 
R. areren (Jasmine-like). This is the correct name 
of the plant described in this work as Crassula jas- 
minea. 
R. odoratissima (very fragrant). f. pale yellow 
or creamy- white, sometimes rosy, sweet - scented, 
about lin. long; limb of the petals lanceolate; cymes many- 
flowered. June. l. erecto-patent, linear-lanceolate or subulate, 
lin. to 14in. long, taper-pointed. Stem erect, 1ft. to 1}ft. high, 
scabrous, much-branched or nearly simple. 1793. SYN. Crassula 
odoratissima (A. B. R. 26 í 
R. versicolor (various-coloured). This is the correct name of 
the plant described in this work as Crassula versicolor. 
ROCHELIA. A synonym of Echinospermum 
(which see). 
ROCK BEAUTY. 
pyrenaica. 
ROCK BRAKE. See Cryptogramme. 
ROCK CRESS. See Arabis. 
ROCK CRESS, PURPLE. A common name for 
Aubrietia deltoidea purpurea. i 
ROCKERIES. Where alpines and perennials are 
cultivated in any great quantity, it is essential that some 
sort of a Rockery should be provided for the accommo- 
dation of the rarer and dwarf-growing species. It may 
be on a small or an unlimited scale, according to the 
extent of the collection; in any case, this style of 
gardening affords very great interest, especially when 
the plants can be induced to succeed. Besides alpines 
and dwarf perennials, there are numerous other sub- 
jects that may often be appropriately introduced, such 
as hardy Ferns, Yuccas, compact-growing shrubs, Juni- 
pers, hardy Heaths, &e. When constructing a Rockery, 
the principal object should be to provide situations, and 
allow sufficient space amongst the stones for the plants 
to grow. The outline or shape can be formed by 
building up such ordinary soil as may be at command; 
the stones can then be embedded over any part of the 
surface desired, and a new compost added at the time 
the plants are arranged and inserted. Rockwork is 
generally constructed of stone, if this is procurable; but 
frequently other substitutes, such as old bricks, clinkers, 
&c., have to be utilised. Little can be said respecting 
the proper arrangement, as this varies, in almost every 
individual case, to suit the situation, plants available, and 
the surroundings. A background of some sort is desirable, 
for affording shelter and protection from cutting winds; 
synonym of Saccolabium 
A common name for Draba 
