Rhynchospermum. See [Trachelospermum].
Ribes (Currant, Gooseberry). Saxifrageæ.
Seeds, which should be sown as soon as ripe, or else stratified for new varieties. Commonly from ripe cuttings. See Currant and Gooseberry.
Offsets, which should be removed and potted off when the plants are at rest.
Ricinus (Castor Bean). Euphorbiaceæ.
Seeds, which in the north are started in-doors.
Rivina, Piercea (Hoop Withy). Phytolaccaceæ.
Readily propagated by seeds; also by cuttings, inserted during spring in heat.