Find Me A Cure

Botanical Name: Cytisus scoparius (LINN.)
Family: N.O. Leguminosae

Synonyms: Spartium scoparium (Linn.). Genista scoparius (Lam.). Sarothamnus scoparius (Koch). Broom Tops. Irish Tops. Basam. Bisom. Bizzom. Browme. Brum. Breeam. Green Broom.
Part Used: Tops.
Habitat: The densely-growing Broom, a shrub indigenous to England and common in this country, grows wild all over temperate Europe and northern Asia, being found in abundance on sandy pastures and heaths. It is sparingly naturalized in sandy soil in North America.

Brooms are a group of evergreen, semi-evergreen, and deciduous shrubs in the subfamily Faboideae of the legume family Fabaceae, mainly in the three genera Chamaecytisus, Cytisus and Genista, but also in five other small genera . All genera in this group are from the tribe Genisteae (syn. Cytiseae). These genera are all closely related and share similar characteristics of dense, slender green stems and very small leaves, adaptations to dry growing conditions. Most of the species have yellow flowers, but a few have white, orange, red, pink or purple flowers.

Two other close relatives are Ulex (gorse) and Laburnum (laburnum), but these differ more strongly in appearance from the brooms. Some botanists include Podocytisus caramanicus in the genus Laburnum.

All the brooms and their relatives (including Laburnum and Ulex) are natives of Europe, north Africa and southwest Asia, with the greatest diversity in the Mediterranean region. Many brooms (though not all) are fire-climax species, adapted to regular stand-replacing fires which kill the above-ground parts of the plants, but create conditions for regrowth from the roots and also for germination of stored seeds in the soil.

Description:
It grows to a height of 3 to 5 feet and produces numerous long, straight, slender bright green branches, tough and very flexible, smooth and prominently angled. The leaves are alternate, hairy when young the lower ones shortly stalked, with three small, oblong leaflets, the upper ones, near the tips of the branches, sessile and small, often reduced to a single leaflet. Professor G. Henslow (Floral Rambles in Highways and Byways) says with reference to the ‘leaves’ of the broom: ‘It has generally no leaves, the green stems undertaking their duties instead. If it grows in wet places, it can develop threefoliate leaves.’ The large bright yellow, papilionaceous, fragrant flowers, in bloom from April to July, are borne on axillary footstalks, either solitary or in pairs, and are succeeded by oblong, flattened pods, about 1 1/2 inch long, hairy on the edges, but smooth on the sides. They are nearly black when mature. They burst with a sharp report when the seeds are ripe flinging them to a distance by the spring-iike twisting of the valves or sides of the pods. The continuous crackling of the bursting seed-vessels on a hot, sunny July day is readily noticeable. The flowers have a great attraction for bees, they contain no honey, but abundance of pollen.

‘In flowers without honey, such as the Broom, there is a curious way of “exploding” to expel the pollen. In the Broom the stigma lies in the midst of the five anthers of the longer stamens, and when a bee visits the flower those of the shorter explode and disperse their pollen on the bee pressing upon the closed edges of the keel petal. “The shock is not enough to drive the bee away . . . The split now quickly extends further . . . when a second and more violent explosion occurs.” The style was horizontal with a flattened end below the stigma; but when freed from restraint it curls inwards, forming more than a complete spiral turn. It springs up and strikes the back of the bee with its stigma. The bee then gathers pollen with its mouth and legs.’ (From The Fertilization of Flowers, by Professor H. Mueller, pp. 195-6)

Species of broom:
The most widely familiar is common broom (Cytisus scoparius, syn. Sarothamnus scoparius), a native of northwestern Europe, where it is found in sunny sites, usually on dry, sandy soils. Like most brooms, it has apparently leafless stems that in spring and summer are covered in profuse golden-yellow flowers. In late summer, its pea-pod like seed capsules burst open, often with an audible pop, spreading seed from the parent plant. It makes a shrub about 1–3m tall, rarely to 4m. It is also the hardiest broom, tolerating temperatures down to about -25°C.

The largest species of broom is Mount Etna broom (Genista aetnensis), which can make a small tree to 10m tall; by contrast, some other species, e.g. dyer’s broom Genista tinctoria, are low sub-shrubs, barely woody at all.

Invasive species:
In some areas of North America, common broom, introduced as an ornamental plant, has become naturalised and an invasive weed due to its aggressive seed dispersal; it has proved very difficult to eradicate. Similarly, it is a major problem species in the cooler and wetter areas of southern Australia and New Zealand. On the west coast of the United States, French broom (Genista monspessulana) and Spanish broom (Spartium junceum) are also considered noxious invasives, as they are quickly crowding out native vegetation, and grow most prolifically in the least accessible areas.
Cultivation:
Broom is most easily raised from seed, sown broadcast in the open air, as soon as ripe. Seedlings may be transplanted in autumn or spring to their permanent position. Prune directly after flowering, if the shoots have not been gathered for medicinal use, shortening the old shoots to the base of promising young ones.

As their roots strike down deeply into the ground, the plants can be grown in dry, sandy soil, where others will not grow. They do well on rough banks.

Broom may also be increased by layers. Choice garden varieties are generally increased by cuttings inserted in cold frames in September.

Historical uses:
The Plantagenet kings used common broom (known as “planta genista” in Latin) as an emblem and took their name from it. It was originally the emblem of Geoffrey of Anjou, father of Henry II of England. Wild broom is still common in dry habitats around Anjou, France.

Genista tinctoria (dyer’s broom, also known as dyer’s greenweed or dyer’s greenwood), provides a useful yellow dye and was grown commercially for this purpose in parts of Britain into the early 19th century. Woollen cloth, mordanted with alum, was dyed yellow with dyer’s greenweed, then dipped into a vat of blue dye (woad or, later, indigo) to produce the once-famous “Kendal Green” (largely superseded by the brighter “Saxon Green” in the 1770s). Kendal green is a local common name for the plant.

The flower buds and flowers of Cytisus scoparius have been used as a salad ingredient, raw or pickled, and were a popular ingredient for salmagundi or “grand sallet” during the 17th and 18th century.

Constituents:
Broom contains two principles on which its activity depends. Sparteine, discovered in 1851 by Stenhouse, of which about 0.03 per cent is present, is a transparent, oily liquid, colourless when fresh, turning brown on exposure, of an aniline-like odour and a very bitter taste. It is but slightly soluble in water, but readily soluble in alcohol and ether. Stenhouse stated that the amount of Sparteine in Broom depends much upon external conditions, that grown in the shade yielding less than that produced in sunny places.

Scoparin, the other principal constituent, is a glucoside, occurring in pale-yellow crystals, colourless and tasteless, soluble in alcohol and hot water. It represents most of the direct diuretic activity of Broom.

Volatile oil, tannin, fat, wax, sugar, etc., are also present. Broom contains a very large quantity of alkaline and earthy matter, on incineration yielding about 3 per cent of ash, containing 29 per cent of carbonate of potash.

Sparteine forms certain salts of which the sulphate (official in the British and the United States Pharmacopceias) is most used in medicine. It occurs in colourless crystals, readily soluble in water.

Oxysparteine (formed by the action of acid on Sparteine) is used as a cardiac stimulant.

The flowers contain volatile oil fatty matter, wax, chlorophyll, yellow colouring matter, tannin, a sweet substance, mucilage, albumen and lignin. Scoparin and the alkaloid sparteine have been separated from them.
Part Used Medicinally:
The young, herbaceous tips of the flowering branches are collected in early spring, generally in May, as they contain most alkaloid at the close of the winter. They are used officially both in the fresh and dried state.

Broom Juice (Succus Scoparii) is directed to be obtained by pressing out the bruised, fresh tops, adding one-third volume of alcohol and setting aside for seven days, filtering before use.

For the expression of the juice the fresh tops may be gathered in June. Broom Juice is official in the British, French, German and United States Pharmacopoeias.

Infusion of Broom (Infusum Scoparii) is made by infusing the dried tops with boiling water for fifteen minutes and then straining. It was introduced in the British Pharmacopoeia of 1898, in place of the decoction of Broom of the preceding issues.

The Fluid Extract of Broom of the United States Pharmacopceia is prepared from the powdered dried tops.

The drug, as it appears in commerce, consists of very long, much-branched, tough and flexible twigs, which lie parallel with and close to one another and are about 1/25 to 1/12 inch thick, narrowly five-winged, with alternating, slight nodes, dark-green and usually naked; internally, greenish-white.

When fresh, the whole plant has a strong and peculiar odour, especially when bruised, which almost entirely disappears on drying.

The tops are dark green when fresh and dark brownish-green when dried.

The quality of the drug deteriorates with keeping, and this condition can be determined by the partial or complete loss of the slight, peculiar odour of the recently dried drug.

The deep yellow flowers, dried, are considerably employed separately, under the name Flores Genistae, or Flores Scoparii.

Broom Seeds are used sometimes and are as active as the tops. Water and alcohol extract their active properties.

Medicinal Action and Uses:
Diuretic and cathartic. Broom tops are used in the form of decoction and infusion, often with squill and ammonium and potassium acetate, as a feeble diuretic, generally in dropsical complaints of cardiac origin. The action is due to the Scoparin contained, whose action on the renal mucous membrane is similar to that of Buchu and Uva-Ursi.

The infusion is made from 1 OZ. of the dried tops to a pint of boiling water, taken in wineglassful doses frequently. When acute renal inflammation is present, it should not be given.

Broom Juice, in large doses, is apt to disturb the stomach and bowels and is therefore more often used as an adjuvant to other diuretics than alone.

A compound decoction of Broom is recommended in herbal medicine as of much benefit in bladder and kidney affections, as well as in chronic dropsy. To make this, 1 OZ. Broomtops and 1/2 oz. of Dandelion Roots are boiled in one pint of water down to half a pint, adding towards the last, 1/2 oz. of bruised Juniper berries. When cold, the decoction is strained and a small quantity of cayenne added. A wineglassful is taken three or four times a day.

The statements of different investigators, both clinical and pharmacological, concerning the effects of the Sparteine in preparations of Broom, have elicited absolutely opposing views on the effect upon the nerves and circulatory system. It is found to produce a transient rise in arterial pressure, followed by a longer period of decreased vascular tension. Small doses slow the heart for a short period of time and then hasten its rate and at the same time increase the volume of the pulse. Those who advocate its employment claim that it is a useful heart tonic and regulator in chronic valvular disease. It has no cumulative action, like Digitalis.

In large doses, Sparteine causes vomiting and purging weakens the heart, depresses the nerve cells and lowers the blood pressure and has a strong resemblance to the action of Conine (Hemlock) on the heart. In extreme cases, death is caused by impairing the activity of the respiratory organs. Shepherds have long been aware of the narcotic properties of Broom, due to Sparteine, having noticed that sheep after eating it become at first excited and then stupefied, but the intoxicating effects soon pass off.

Preparations; Fluid extract, 1/2 to 1 drachm. Juice, B.P., 1 to 2 drachms. Infusion, B.P., 1 to 2 oz.

Substitutes: It is essential that true Broom be carefully distinguished from Spanish Broom (Spartium junceum), since a number of cases of poisoning have occurred from the substitution of the dried flowers of Spartium for those of the true Broom.

Disclaimer:
The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplements, it is always advisable to consult with your own health care provider.

Resources:

http://www.botanical.com/botanical/mgmh/b/broom-70.html

http://en.wikipedia.org/wiki/Broom_%28shrub%29

If you liked the post, please subscribe to my RSS feed.
If we could help you, please spread the word.