634 
THE DICTIONARY 
OF GARDENING, 
“ REICHARDIA (of Roth, 1787). 
Picridium (which see). 
REICHARDIA (of Roth, 
Pterolobium (which see). 
REMIJIA (named in honour of Dr. Remijo. who, 
according to Anguste de Saint-Hilaire, was the first to 
make known in Brazil the valuable febrifagal property 
of the bark of these plants). Syn. Macrocnemum. ORD. 
Rubiacew. A genus embracing about thirteen species of 
stove shrubs or small trees, allied to Cinchona, natives 
of tropical America. Flowers white or pink, scented, 
pubescent, silky, or villous, in axillary, interrupted, often 
long-pednnenlate racemes; stamens fiye, inserted below 
the middle of the tube. Leaves opposite or ternately 
whorled, sometimes large and yery coriaceous; stipules 
intrapetiolar, often large. Only one species has been intro- 
duced. R. pedunculata requires a warm, moist atmosphere. 
It shonld be planted in fresh, spongy, Heath soil coarsely 
broken up, and this should be kept moist by frequent 
waterings. According to the ‘*Revne  Horticole,” 
however, it might grow stouter and more branching if 
kept in a temperate house near the glass. It may be 
propagated as recommended for Cinchona (which sev). 
R. pedunculata (long-pedunculate). fl. pink; peduncles as 
long as the leaves. /. opposite, shortly petiolate, about 6in. 
long, ovate, acute, strongly nerved. Andes of Colombia, 1887. 
Shrub. (Gn., April 13, 1889, p. 345; R. H. 1887, f. 84.) 
REMOTE. Separated by unusually large intervals. 
RENANTHERA. With the exception of Renanthera 
Lowii, the members of this genus require to be grown in a 
strong light to induce them to flower in a satisfactory 
manner. Exposure to the full power of the sun’s rays, 
with a hot, humid condition of the atmosphere, are 
essential during the active season of growth, with cooler 
and drier treatment during the resting season. The most 
free-flowering of these, and one of the most handsome, is 
R. Storeti. R. Imschootiana is a small plant, and is most 
suited for basket culture. Renantheras require ample 
drainage, and a potting compost consisting of good living 
sphagnum pressed moderately firm. 
To the species described on p. 233, Vol. III., the 
following should be added. One or two species are trans- 
ferred to Arachnanthe. 
R. Imschootiana (Imschoot’s).* 7. reddish-vermilion and 
yellow, simply racemose, somewhat resembling those of 
R. coccinea, Wut having shorter perianth segments. Assam, 
1892. There is a variety superba. 1899. 
R. matutina breviflora is synonymous with R. elongata. 
R. Rohaniana (Prince Camille de Rohan’s). fl. yellow and 
crimson; peduncle black-hispid, flexuous, slender. Borneo, 
1891. (W. O. A., t. 435.) According to the Kew authorities, 
this is a form of R. Hookeriana. 
RENDLE’S TANK SYSTEM OF HEATING. 
The system advocated by Wm. Rendle was fixing a large 
tank in the centre of a house heated by hot-water pipes 
from the boiler passing to the tank to heat the water. 
The tank was covered to prevent excessive escape of 
steam, and tan was used around the tank to plunge 
plants in. For heating purposes the plan had little to 
recommend it, and never became popular; buat probably 
it gave the idea of having hot-water tanks in propa- 
gating houses. These are usually shallow, cemented 
tanks, with flow and return hot-water pipes through 
them to heat the water, which is covered with slabs. 
On the slabs cocoanut fibre is placed, and pots or pans 
filled with compost. Cuttings or seeds plunged in this 
material qnickly germinate or root through the genial 
bottom-heat thus afforded. 
RESERVE GARDEN. In almost all gardens 
it is advisable to have a portion set apart for growing 
on or nursing trees and hardy plants for future use. 
Such plants are extremely useful for filling up gaps, 
adding to existing collections, and, in the case of foreing 
plants, for lifting and potting as required for bringing 
on under glass. 
REST. See Resting. 
RESTREPIA. The various members of the Restrepia 
family are best grown in shallow pans or baskets so that 
they may be suspended near the roof-glass of the cool 
Orchid-house. They require a similar potting compost 
to that advised for Masdeyallias. 
A synonym of 
1821). A synonym of 
Restrepia—continued. 
To the species described on p. 284, Vol. III., the following , 
should be added : 
R. guttulata (slightly striped). This is very like R. maculata, 
but larger in all its parts and destitute of tendrils at the base 
of the lip. Eenador. 
R. maculata is the correct name of R. antennifera. 
R. ophiocephala (snake’s-head). jl. whitish-pink, solitary, 
nearly lin. across, shortly gibbous at base ; dorsal sepals large, 
tongue-shaped, scurfy-puberulous; petals scarlet-striated; lip 
straight, entire. 7. fleshy, coriaceous, ovate-lanceolate, shortly 
three-toothed at apex. Mexico. Syn. Pleurothallis ophiocephala. 
R. pandurata (fiddle-shaped). (/l. several produced in suc- 
cession; lateral sepals whitish, spotted crimson-purple; lip 
pandurate, the anterior blade very ‘broad, transversely 
oblong, covered with warts, hairy, whitish, with numerous 
port-wine-coloured spots; column having two orange spots at 
the base. September. 7. 24in. to 4in. long. Stems lin. to 
2in. high. Colombia, 1884. 
R. punctulata (slightly dotted). A garden synonym of 
R. elegans. 
R. sanguinea (blood-coloured). /. 
long. J. elliptic, 2in. long. 
Colombia, 1896. 
R. striata (striated). This differs from other species of the 
genus in having striped instead of spotted sepals; they are 
united for more than -half their length. Otherwise it is not 
unlike AR. elegans. Colombia, 1891. (B. M. 7233.) 
RETARDING. With the aid of specially con- 
structed Retarding chambers, such as those made for 
Messrs. Rochford, Turnford, Herts, flowers of Lilies, 
Spireas, Azalea mollis, &e., are produced all the year 
round. The retarded plants, crowns, or bulbs are 
brought out of the cool chambers into heat, and the 
results achieved are highly satisfactory. The gardener, 
not haying such convenience for Retarding, is obliged 
to purchase such crowns, &c., from nurserymen or other 
specialists. At the same time much may be done to 
retard yarious subjects under his charge, and thus 
prolong the ordinary season of production. By disposing 
flowering plants in different parts of the garden in 
varying aspects, the season of beauty may be extended. 
Gooseberries and Currants planted behind a north wall 
and kept dry overhead will furnish fruit until November. 
In fact, the skilful gardener, with the necessary means 
at his command, accomplishes much in Retarding and 
prolonging supplies of fruit, flowers, and vegetables. 
RETTBERGIA. A synonym of Chusquea (which 
see). 
RHAMNUS. To the species described on p. 286, 
Vol. III., the following shonld be added: 
R. Alaternus aurea (golden). 
speckled with yellow. 
R. alnifolia (Alder-leaved).. jl. green, solitary or aggregated, 
produced on the lower part of the young shoots. May and 
June. fr. black, three-seeded. 7. ovate, acuminate, serrated, 
lin. to 3in. long, acute at base, pubescent on the veins 
beneath. h. 2ft. to 4ft. North America, 1778. 
R. hybrida (hybrid). . axillary, always sterile. 2. oblong, 
acuminate, finely denticulate, persistent till the second winter. 
Supposed to be a hybrid between R. Alaternus and R. alpina. 
Syn. R. sempervirens (of gardens). 
R. Purshiana (Pursh’s). . green; umbels axillary ; peduncles 
longer than the petioles. May. fr. black, the size of Peas. 
l. broadly elliptic, denticulate-serrated, 3in. to Sin. long, 
strongly pubescent beneath. A. 10ft. to 20ft. North America, 
1826. 
R. sempervirens (evergreen). A 
R. hybrida. 
RHAPHIDOPHYLLUM. A 
Rhapidophyllum (which see). 
RHAPHIODON. A synonym of Hyptis (which 
crimson ; peduncle 2in. 
Otherwise like R. pandurata. 
7. larger than in R, A. variegata, 
garden synonym of 
misspelling of 
see). 
RHAPHIOLEPIS [Raphiolepis is the correct 
spelling]. To the species described on p. 287, Vol. IIL, 
the following should be added: 
R. ovata (ovate).* Japanese Hawthorn. fl. pinkish-white, 
disposed in compact umbels. Spring. 7. ample, rounded, dark 
green, forming rosettes at the tips of the branches. Japan, 
about 1870. A beautiful shrub. (R. H. 1870-71, p. 348.) There 
is a form with variegated leaves. 
RHAPIS. R. Kwanwortsik (misspelled Kwamwonzick 
in I. H. 1887, t. 13) is a synonym of R. flabelliformis. 
