The Botanist's Companion, Volume II / Or an Introduction to the Knowledge of Practical Botany, and the Uses of Plants. Either Growing Wild in Great Britain, or Cultivated for the Puroses of Agriculture, Medicine, Rural Oeconomy, or the Arts

by William Salisbury

589. RHAMNUS Frangula. BUCKTHORN.—The bark produces a slight yellow, and the unripe berries impart to wool a green colour.

590. RHAMNUS catharticus. PURGING BUCKTHORN.—The bark yields a most beautiful yellow colour; and the ripe berries in the autumn produce a brilliant scarlet.

591. RHUS Cotinus. VENUS'S SUMACH.—The bark of the stalks produces a yellow colour; the bark of the roots produces a red.

592. RHUS coriaria. ELM-LEAVED SUMACH.—This plant is possessed of the same qualities as the one above.

593. RUBIA tinctorum.—The root produces a red colour. For its culture, see p. 32.

594. RUMEX maritima. DOCK.—The whole herb gives out a yellow colour.

595. SALIX pentandra. WILLOW.—The leaves produce a yellow colour.

596. SCABIOSA succisa. DEVIL'S BIT SCABIUS.—The dried leaves produce a yellow colour.

597. SERRATULA tinctoria. SAW-WORT.—The whole herb produces a yellow tincture.

598. SENECIO Jacobaea. RAGWORT.—The roots, stalks, and leaves, before the flowering season, give out a green colour which can be fixed on wool.