The Universal Herbal: Asperula Arvensis; Blue or Field Woodroof.

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.
1824Leaves six in a whorl; flowers sessile, terminal, aggregate; root annual, slender, with a yellow bark; corollas blue, with streaks of darker blue; germs smooth. - The roots dye a fine red colour. It flowers in July, and is a native of France, Germany, and various parts of Italy.