The Universal Herbal: Centaurea Rhapontica; Swiss Centaury.

The Universal Herbal;
or botanical, medical and agricultural dictonary.
Containing an account of All the known Plants in the World, arranged according to the Linnean system. Specifying the uses to which they are or may be applied, whether as food, as medicine, or in the arts and manufactures.
With the best methods of propagation, and the most recent agricultural improvements.
collected from indisputable Authorities.
Adapted to the use of the farmer - the gardener - the husbandman - the botanist - the florist - and country housekeepers in general.
By Thomas Green.
Vol. I
Liverpool.
Printed at the Caxton Press by Henri Fisher.
Printer in Ordinary to His Majesty.
1824Calices scariose; leaves ovate-oblong, toothletted, entire, petioled, tomentose beneath. - This is a handsome plant; flowers solitary, large; floscules purple, very numerous, without any neuters: it flowers in July, and is found in Switzerland, and about Verona. The root of this plant, and of several of the species allied to it, are bitter and astringent, and were for merly much given in cases wherein Jesuit's bark is now administered; the plant also will dye yellow. Neither this nor the thirty-seventh species, perfect their seeds in England, they must therefore be procured from their native countries: they are perennial, and hardy; and when once obtained, may be increased by the root.