The volatile essential oil of Tarragon is chemically identical with that of Anise, and it is found to be sexually stimulating. Probably by virtue of its finely elaborated camphor it exercises its specific effects, the fact being established that too much camphor acts in the opposite direction.
John Evelyn says of the plant "'Tis highly cordial and friendly to the head, heart, and liver."
THISTLES.
Thistles are comprised in a large mixed genus of our English weeds, and wild plants, several of them possessing attributed medicinal virtues. Some of these are Thistles proper, as the Carduus, the Cnicus, and the Carlina: others are Teasels, Eryngiums, and Globe Thistles, etc. Consideration should be given here to the Carduus marianus, or Lady's Thistle, the common [556] Carline Thistle, the Carduus benedictus (Blessed Thistle), the wild Teasel (Dipsacus), and the Fuller's Teasel, as Herbal Simples; whilst others of minor curative usefulness are to be incidentally mentioned.
As a class Thistles have been held sacred to Thor, because, say the old authors, receiving their bright colours from the lightning, and because protecting those who cultivate them from its destructive effects.
In Devon and Cornwall Thistles are commonly known as Dazzels, or Dashel flowers. As a rule they flourish best in hot dry climates.
The Carduus marianus (Lady's Thistle), Milk Thistle, or Holy Thistle, grows abundantly in waste places, and near gardens throughout the British Isles, but it is not a native plant. The term Carduus, or Cardinal, refers to its spring leaves, and the adjectives "Marianus," "Milk," and "Holy," have been assigned through a tradition that some drops of the Virgin Mary's milk fell on the herb, and became exhibited in the white veins of its leaves. By some persons this Thistle is taken as the emblem of Scotland.
Dioscorides told of the Milk Thistle, "the seeds being drunk are a remedy for infants that have their sinews drawn together." He further said: "The root if borne about one doth expel melancholy, and remove all diseases connected therewith." Modern writers do laugh at this: "Let them laugh that win! My opinion is that this is the best remedy that grows against all melancholy diseases."
The fruit of the Carduus marianus contains an oily bitter seed: the tender leaves in spring may be eaten as a salad; and the young peeled stalks, after being soaked, are excellent boiled, or baked in pies. The heads of this Thistle before the flowers open may be [557] cooked like artichokes. The seeds were formerly thought to cure hydrophobia. They act as a demulcent in catarrh and pleurisy, being also a favourite food of Goldfinches. A decoction of the seeds when applied externally is said to have proved beneficial in cases of cancer.
Thistle down was at one time gathered by poor persons and sold for stuffing pillows. It is very prolific in germination, and an old saying runs on this score:—