by Abraham Rees, D.D. F.R.S. F.I.S. S.Amer.Soc.
with the assistance of Eminent Professional Gentlemen.
London, Printed for Longman, Hurst, Rees, Orme, & Brown, 1819
Woad, in Botany. (See Isatis) There are four species.
The broad-leaved woad is cultivated in several parts of England for the purposes of dyeing, being used as a foundation for many of the dark colours.
Some seed down the leaves of woad in winter with sheep; a practice which Mr. Miller condemns.
Woad grows wild in some parts of France, and on the coasts of the Baltic sea: the wild woad, and that which is cultivated for the use of dyers, appear to be of the same species.
Beside the plant properly signified by the name woad, which dyes a blue colour, we have two others known in our English herbals under that name, as also that of wold or weld. These are both called by the common people dyer's weed, and are the luteola and the genista tinctoria.
The ancients confounded all these three plants also under the same names. Paulus Ægineta seems to make them all the same plant; and Neophytus, speaking of the isatis, or our woad, properly so called, says, that it was called by the Latins lutum. This lutum has been by some understood to mean the luteola, and by others the genista tinctoria; but the latter opinion only is right, for it is described to us by the ancients as having leaves like the linum, or flax, and flowers like the broom.
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