ENCYCLOPEDIA OF GARDENING. 
SPECIES CULTIVATED: R. pinnata, yellowish white, summer, 2 to 3 ft., China; 
podophylla, yellowish white, summer, 3 ft., Japan. . . 
Rodriguezia. — Ord. Orchidacew. Stove epiphytal orchids. 
First introduced 1829. aS 
CULTURE: Compost, sphagnum moss only. Position, blocks of 
wood or baskets suspended from roof. Place on blocks or in baskets, 
Feb. or March. Water freely, March to Sept.; moderately other 
times. Shade from sun. Moist atmosphere very essential in summer. 
Temp., Oct. to Feb. 50° to 60°; Feb. to Oct. 60° to 70°. Propagate 
by division of pecud pulps at potting time. : 
SPECIES CULTIVATED: R. candida, white and yellow, April and May, 1 ft., 
Brazil; decora, rose, red, and white, May and June, 1 ft., Brazil; fragrans, white 
and yellow, April and May, fragrant, Brazil; venusta, white, pink and yellow, 
various periods, Brazil. 
Roella (South African Harebell).—Ord. Campanulacee. Green- 
house evergreen shrubs. First introduced 1774. ; 
CULTURE: Compost, equal parts of peat & loam & a fair quantity of 
sand. Position, pots in light & dry part of greenhouse. Pot, March. 
Water very carefully during spring & summer, & give very little in 
autumn and winter. Syringing or wetting the foliage must be 
avoided at all seasons. Ventilate freely in summer & moderately at 
other times. Dry atmosphere essential in autumn & winter. Remove 
flowers directly they fadé; also all blooms that form in autumn & 
winter. Temp., Sept. to April 40° to 45°; April to Sept. 50° to 60°. 
Propagate by cuttings of strong shoots 2in. long, inserted in moist 
sand in a temp. 58° in spring. Shade from sun. 
SPECIES CULTIVATED: QR. ciliata, white and purple, summer, 1 ft., S. Africa; 
elegans, blue, spring, 8 in., S. Africa. 
Roman Hyacinth (Hyacinthus orientalis albulus). — See 
Hyacinthus. 
Romanzoffia (Sitcha Water-leaf). — Ord. Hydrophyllacex. 
Hardy perennial herb. First introduced 1873. 
CULTURE: Soil, ordinary. Position, sunny ledges of sunny rockery. 
Plant, March or April. Propagate by division, March or April. 
SPECIES CULTIVATED: R. sitchensis, white, spring, 3 to 4 in., Sitcha. 
Romneya (‘Vhite Bush or Tree Poppy).—Ord. Papaveracce. 
Half-hardy perennial. First introduced 1875. 
INDOOR CULTURE: Compost, equal parts, peat, leaf-mould, & 
sand. Position, well-drained pots in light cold greenhouse. Pot, 
March or April. Water moderately, April to Oct.; keep nearly dry 
afterwards. No stimulants required. Repot annually. Propagate 
by seeds sown on compost of fine sandy peat in well-drained pots or 
pans under bell-glass in temp. 55° in spring. 
OUTDOOR CULTURE: Soil, sandy peat. Position, well-drained 
elevated border at base of 8. wall, or sheltered sunny rockery. Plant, 
ree or May. Protect in severe weather with covering of fern or 
itter. 
SPECIES CULTIVATED: R. Coulteri, white, summer, 4 to 6 ft., California. 
Romulea.—Ord. Iridacew. Greenhouse or half-hardy bulbous 
plants. First introduced 1739. 
CULTURE OF HARDY SPECIES: Soil, light rich sandy. Position, 
sunny well-drained border. Plant, Sept. to Jan., placing tubers 4in. 
deep & 2in. apart. Lift & replant tubers annually. Mulch surface 
of bed in March with cow manure. 
CULTURE OF GREENHOUSE SPECIES: Compost, two parts sandy 
loam, one part leaf-mould or decayed cow-manure. Pots, 4$-in. in 
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