ENCYCLOPHDIA OF GARDENING. 
spring, 3 to 4 ft., S. Africa; ofricana nana compacta, dwarf; albo-maculata, 
white, summer, 2 ft., leaves spotted white, S. Africa; elliotiana, yellow, Aug., 
3 ft., S. Africa; melanoleuca, yellow and purple, summer, 18 in., 8. Africa; 
Pentlandii, rich yellow and purple, summer, 2 {ft., 8. Africa; Rehmannii, rosy 
purple, summer, 2 ft., Natal. 7 . 
Richazvdson’s Jaceb’s Ladder (Polemonium Richard- 
sonl).—See Polemonium. 
Ricinus (Castor Oil Plant)—Ord. Euphorbiacerx. Half-hardy 
annual herb. Orn. foliage. First introduced 1548. Flowers, insigui- 
ficant. Leaves, hand-shaped, large, green, purplish. 
INDOOR CULTURE: Sow seeds, previously steeped for a few hours 
in tepid water, }in. deep in pots of light sandy soil in temp. of 70° 
to 75° in March, transplanting seedlings when three leaves form 
singly into 2-in. pots, & keep in similar temp. until well rooted, then 
transfer to 5 or 6 in. pots, after which remove to cool greenhouse or 
dwelling-room. Water moderately. Shade from sun. 
OUTDOOR CULTURE: Sow sceds & transplant into small pots as 
above. Transfer to cold frame or pit in May to harden. Plant out, 
June. Position, sunny beds or borders. 
SPECIES CULTIVATED: R. communis, 3 to 6 ft., Trop. Africa, and its several 
varieties, Gibsonii, zanzibarensis, etc. 
Rigid Shield Fern (Nephrodium rigidum).—See Nephrodium. 
River-side Windflower Novena rivularis).—See Anemone. 
Rivina (Blood Berry; Rouge Berry; Rouge Plant).—Ord. Phyto- 
laccacew. Stove evergreen berry-bearing plants. Pretty for table 
decoration. First introduced 1699. Flowers succeeded by scariet 
berries. 
CULTURE: Compost, equal parts leaf-mould & sandy loam, half 
a part silver sand. Position, small, well-drained pots in light part 
of stove, Sept. to June; cold sunny frames, June to Sept. Pot, Feb. 
or March. ater freely April to Oct., moderately afterwards. Apply 
weak stimulants occasionally Oct, to Feb. Shade from sun. Best 
results obtained by raising plants from seed or cuttings annually. 
Propagate by seeds sown 1-16 in. deep in well-drained pots or shallow 
pans of good light soil placed in temp. 55° to 65°, spring; cuttings of 
young shoots inserted in Feb., March or April in small pots of light 
sandy soil in temp. of 65° to 75°, spring. 
SPECIES CULTIVATED: R. humilis, white, June, 1 to 2 ft., Caribbean Islands. 
Roast-beef-plant (Iris fctidissima).—See Iris. 
Robinia (False Acacia; Locust Tree).—Ord. Leguminose. Hardy 
deciduous flowering trees & shrubs. First introduced 1640. 
CULTURE: Soil, ordinary. Position, sunny well-drained borders 
& shrubberies. Plant, Oct. to Feb. Prune, Nov. to Feb. Rose 
Acacia (R. hispida) may be grown against 8. or W. walls, side shoots 
being pruned annually to lin. of base, Nov. or Dec. Propagate 
choice varieties by grafting on common species (R. pseudacacia) in 
March; other kinds by seeds sown } in. deep in or inary soil outdoors, 
Nov. or March; cuttings of shoots, 6 to 8in. long, inserted in ordinary 
soil in sheltered position outdoors in autumn; suckers removed from 
parent tree & planted Oct. or Nov.; layering, Sept. or Nov. 
SPECIES CUL' PIVATED: R. hispida (Rose Acacia), rose, May, 6 to 8 ft. 
S.U, States; hispida inermis, without prickles; pseudacacia (Locust Tree; False 
Acacia), white, April, 30 to 50 ft., W.U, States; and its varieties, aurea (golden- 
leaved) and bessoniana (round headed); decaisneana (pink-flowered), ete. 
Robinson's Iris (Moraa robinsoniqna)—See Morea. 
Rocambol.—Sce Allium, 
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