298 
THE DICTIONARY OF GARDENING, 
Rhododendron—continued. 
telling. MICHAEL WATERER, crimson-spotted ; fine.. MINNIE, 
blush-white, spotted with chocolate; distinct. MONT BLANC, 
white, dwarf, and free-flowering. MRS. JOHN CLUTTON, white ; 
one of the best in cultivation. Mrs. WILLIAM BOVILL, rich rosy- 
scarlet; one of the most attractive. MURILLO, rich crimson. 
NERO, dark rosy-purple, richly spotted. PRINCESS MARY OF 
CAMBRIDGE, light blush, deeper edging. PURITY, white, faint 
yellow eye; very showy. REEDIANUM, bright cherry; very 
pretty. ROSABEL, pale rose ; fine foliage and habit. SIR Isaac 
NEWTON, plum-colour, shaded and spotted. SIR THOMAS SE- 
BRIGHT, rich purple, distinct bronze blotch. SNOWFLAKE, pure 
white; conical truss; distinct and beautiful. STANDARD OF 
FLANDERS, blush, distinctly spotted ; very showy. STELLA, pale 
rose, intense chocolate blotch ; free-flowering. SYLPH, bright 
rosy-pink ; fine truss. THE QUEEN, blush, — to white; 
fine shape. TITIAN, clear rosy-scarlet; one of the best. VAN- 
DYCK, rosy-crimson; good. VERSCHAFFELTI, blush, much 
spotted. VESTAL, erose, much spotted ; fine truss. WILLIAM 
DOWNING, rich dark puce, finely blotched. 
RHODOLEIA (from rhodon, a rose, and leios, smooth ; 
perhaps referring to the rose-like flowers and the spine- 
less stems). Orp. Hamamelidee. A genus comprising a 
or stove trees, with the habit of Rhododendron; one is 
from Hong Kong, and the other a native of Sumatra. 
Flowers hermaphrodite, about five in an axillary, peduncu- 
late, nodding head, girded by a coloured, many-leaved 
involucre ; petals rose-colour, two to four, very unequal, 
clawed; stamens seven to ten, inserted with the petals. 
Leaves crowded at the tips of the branchlets, spreading, 
alternate, long-petioled,. evergreen, glaucous beneath, ob- 
long, entire, thickly coriaceous. For culture of R. Cham- 
pioni—the only species introduced—see Gardenia. 
'R. Championi (Champion’s). fl. 24in. in diameter; outer in- 
volucral leaflets (sepals) about twelve ; inner ones (petals) about 
eighteen. February. fr. of five radiating capsules, each the size 
of a small hazel-nut. J. bright green, elliptic-obovate, obtuse. 
Hong Kong, 1852. (B. M. 4509.) 
Myrtle; in allusion to the rose-coloured flowers of some 
species, and the alliance to the Myrtle). ORD. Myrtacee. 
A genus containing five species of stove or greenhouse, 
villous or tomentose trees or shrubs; one is dispersed 
over tropical Asia, from the Indian Archipelago as far 
as China, and the rest are natives of Eastern Australia. 
Flowers often rather large, axillary; calyx tube scarcely 
or not produced above the ovary; limb of four or five 
herbaceous, persistent segments; petals four or five, 
spreading; stamens densely many-seriate, free; peduncles 
one to three-flowered, rarely racemosely five to seven- 
flowered, rather long or very short. Leaves opposite, 
penniveined or triplinerved. R. tomentosa is the only 
species known to gardeners. For culture, see Myrtus. 
R. tomentosa (tomentose).* Hill Gooseberry; Indian Hill 
Guava. fl. rose-colour ; calyx five-fid ; uncles one to three- 
flowered, shorter than the leaves, with two ovate bracteoles 
beneath the flowers, June. /. ovate, the younger ones velvety 
above, cano-tomentose beneath, siree-terved ; lateral nerves sub- 
marginal. h, 5ft. China, &c., 1776. Greenhouse shrub. (B. M. 
250, under name of Myrtus tomentosa.) 
RHODORA (from rhodos, a rose; alluding to the 
colour of the showy flowers). ORD. Ericacee. A mono- 
typie genus. The species is a hardy, deciduous shrub, 
included by Bentham and Hooker, under Rhododen- 
dron (which see for culture). 
R. canadensis (Canadian).* /l. rose-purple (rarely white), in 
shortly-stalked, umbel-like clusters, appeari rather earlier 
thah the leaves,showy. J. oblong, deciduous, whitish and down 
beneath. h. 2ft. to 4ft. North America. (B. M. 474; T., S. M 
441.) The correct botanical name of this plant is Rhododendron 
Rhodora. 
RHODORHIZA. Included under Convolvulus. 
RHODOSPATHA (from rhodon, a rose, and spatha, 
a spathe ; alluding to the colour of the spathe in some 
species). ORD. Aroidew (Aracew). A genus comprising 
sıx or seven species of stove, climbing, tropical American 
shrubs, with rooting branches. Flowers all hermaphro- 
dite, or the lower ones female; spathe boat-shaped, 
rostrate, deciduous; spadix shorter than the spathe, 
dense-flowered, cylindrical, elongate-stipitate. Leaves 
couple of species of small, highly glabrous, greenhouse: 
RHODOMYRTUS (from rhodon, a rose, and Myrtos, ; 
Rhodospatha—continued. 
distichous, elliptic-oblong, acuminate, with numerous 
arcuate, parallel nerves; petioles about as long as the 
leaves, long-sheathed. ‘The species introduced thrives in 
a compost of sandy loam and peat, and requires a moist 
atmosphere. Propagated by seeds, or by cuttings. 
R. blanda (charming). fl., spathe greenish-ochre ; spadix rather 
long-stalked, cylindroid, loosely attenuated towards the apex. 
l. oblong-elliptic, slightly obtuse at base, loosely arcuate and 
narrowed towards the apex, acute.. Brazil, 1860. 
RHODOSTACHYS (from rhodon, a rose, and 
stachys, a flower-spike; alluding to the rose-coloured 
flowers of some species). Syn. Ruckia. ORD. Brome- 
liacew. A small genus (six or seven species have been 
described) of stove herbs, natives of Chili, Columbia, 
and Guiana. Flowers sub-sessile, on an hemispherical 
or shortly conical receptacle; sepals distinct above the 
ovary, erect, closely imbricated; petals free, imbricated, 
glandular, or with two small scales at the base within ; 
heads terminal, sessile within an involucre of numerous 
floral leaves. Leaves rosulate, long-linear, slightly’ rigid, 
spinuloso-serrate. The only species introduced require 
culture similar to Bromelia (which see). 
R. andina (Andine). M. soft Tose-colour, crowded on a hemi- 
spherical receptacle, each subtended by an oval-oblong, cucul- 
late, cuspidate, toothed, bract. Summer. Z. lft. to 1}ft. long, 
margined with robust — numerous, rigid, thick, fleshy, 
glaucous- » powde with white, arranged in a dense, 
r rosette. h. lft. Andes of Chili, 1850. (R. H. 1885, 
.) Syns. Bromelia carnea, B. longifolia (of Lindley) (L. & 
P. F. G. ii, 65). R. grandiflora and R. littoralis are probably 
only forms of this species. 
R. bicolor (two-coloured). fl. rose-colour ; inflorescence close, 
sessile, surrounded by a tuft of linear-ensiform, channelled, re- 
curved, spiny-edged leaves. 1851. An interesting, almost stem-. 
less perennial. The following are probably slight forms: Bro- 
melia bicolor (B. H. 1873, 14), B. Joinvillei (R. H. 1876, 10), 
an piteairnicfolia (R. H. 1868, 211), Ruckia Ellemeeti (R. G. 
RHODOSTOMA. 
(which see). - 
RHO (from rhodon, a rose, and 
thamnos, a shoot or branch; alluding to the rosy colour 
of the flowers). Orp. Ericacee. A monotypic genus. 
The species is a small, hardy, branched shrub, in in- 
florescence and habit resembling Azalea (which see for 
culture). 
Included under Palicourea 
Chameecistus (Chamecistus).* fl. pink, sub-erect, solitary at 
the tips of the branchlets, on long, slender peduncles; corolla 
rotate, nearly lin. in diameter. May. 1. scattered, shortly petio- 
late, elliptic-lanceolate, entire, setose-ciliated, evergreen, shining. 
Branchlets glabrous. h. 6in. Alps of Eastern Europe, 1786. 
(B. M. 488, under name of Rhododendron Chamecistus.) 
RHODOTYPOS (from rhodon, a rose, and typos, a 
type or model; the flowers resemble those of a Rose). 
ORD. Rosacew. A monotypic genus. The species is a 
hardy shrub, allied to Kerria (which see for culture). 
R. kerrioides (Kerria-like).* White Kerria. fi. white, solitary, 
ample, terminating the branchlets, shortly pedicellate; calyx 
persistent, villous within; petals four, ample, orbiculate, shortly 
clawed. April. Z. decussately opposite, petiolate, simple, ovate, 
acuminate, argutely serrated, silky beneath; stipules free, mem- 
branous. Branches decussate, twiggy. A. 15ft. Ja 1866. 
(B. M. 5805 ; R. G. 505; R. H. 1866, Fig, 54, S. Z. F. J. 99.) 
RHOEO (name not explained by its author). ORD. 
Commelinaceæ. A monotypic genus. The species is a 
stove, perennial herb, often classed under Tradescantia 
(which see for culture). 
R. discolor (party-coloured).* A. blue or purple, almost included 
within the bracts, many, EENE AELA sepals and petals 
three, free; peduncles axillary, sometimes divided. June. 
l much imbricated, rather large, narrow-lanceo- 
late, sessile, and sheathed at base, often purplish 
beneath. Stem short, or wanting. Central koria 
(B. M. 1192, 5079; F. d. 5. 1169-70 and Ref. B. 48, 
under name of Tradescantia discolor.) 
RHOMBOID. Approaching a rhomb in 
shape; quadrangular, with the lateral angles 
—— A Rhomboid leaf is shown at Fig. 
Fig. 370. 
RHOMBOID 
LEAF. 
