While the indigenous asparagus has been used from time immemorial as a medicine by Gauls, Germans, and Britons, its cultivation and use as a vegetable was only made known to the people by the invading Roman armies. But in the early part of the sixteenth century it was mentioned among the cultivated garden vegetables, and Leonard Meager, in his "English Gardener," published in 1683, informs us that in his time the London market was well supplied with "forced" asparagus.
The medicinal virtues formerly attributed to asparagus comprise a wide range. The roots, sprouts, and seeds were used as medicine. The fresh roots are diuretic, perhaps owing to the immediate crystalizable principle, "asparagine," which is said to be sedative in the dose of a few grains. A syrup made of the young shoots and an extract of the roots has been recommended as a sedative in heart affections, and the species diuretica—a mixture of asparagus, celery, parsley, holly, and sweet fennel—was a favorite preparation for use in dropsy and gravel. Among the Greeks and Romans it was one of the oldest and most valued medicines, and to which most absurd virtues were attributed. It was believed that if a person anointed himself with a liniment made of asparagus and oil the bees would not approach or sting him. It was also believed that if the root be put on a tooth which aches violently it causes it to come out without pain. The therapeutic virtues of asparagus seem to have been held in almost as high esteem by the ancients as those of ginseng are esteemed by the Chinese to this day.
II
BOTANY
he genus Asparagus belongs to the Lily Family. It comprises about one hundred and fifty species, and these are spread through the temperate and tropical regions of the Old World. One-half of these species are indigenous to South Africa, and it is from this region that the most ornamental of the greenhouse species have been obtained.
All the species are perennial, with generally fleshy roots or tubers. The stems are annual in some, perennial in others, most of them being spiny, climbing shrubs, growing to a length of from five to twenty or even fifty feet. The true leaves are usually changed into spines, which are situated at the base of the branches and are often stout and woody. The false leaves, termed cladodia, are the linear or hair-like organs which are popularly called leaves; they are in reality modified branches. These cladodia are nearly always arranged in clusters at intervals along the branches, and the flowers generally spring from their axils. They usually fall off the hardy species in winter, and they are easily affected by unfavorable conditions in all the species. Most of them flower and fruit freely under cultivation, so that seeds are available for propagation.