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Botanical Name: Sisymbrium sophia
Synonyms: Descurainia sophia
Common names: Flixweed, Fluxweed, Ferb-Sophia and Tansy mustard.
Habitat:Sisymbrium sophia is native to Eurasia; it prefers disturbed areas. The non-native Flixweed is an uncommon plant that occurs primarily in NE and west central Illinois; it is rare or absent elsewhere. However, it is probably spreading into other areas of the state. It grows on gravelly or sandy areas along railroads and roadsides, barnyards and pastures, construction sites, and miscellaneous waste areas that are sunny and dry.
Sisymbrium sophia is a biennial or annual plant is ½–2½’ tall. It branches occasionally, and is more or less erect. The stems are greyish or bluish green and pubescent; sometimes the lower stem is nearly glabrous and light purplish green. During the 1st year, biennial plants consist of a low-growing rosette of basal leaves spanning up to 1′ across. The cauline leaves of annual and 2nd-year biennial plants alternate along the flowering stems, spanning up to 8″ long and 4″ across and becoming progressively smaller higher up on the stems. Both the basal and cauline leaves are double or triple pinnately lobed, greyish or bluish green, and finely pubescent. The basal and lower cauline leaves have long petioles, while the petioles of the upper cauline leaves are shorter.
The upper stems terminate in racemes of flowers about 2-12″ in length. The flowers bloom near the apex of each raceme, while the siliques (slender seedpods) develop below. Each small flower is about 1/8″ across, consisting 4 pale yellow petals, 4 green sepals, 6 stamens with yellow anthers, and a pistil with a single style. Both the sepals and petals are quite narrow (especially the latter); the petals are about the same length as the sepals or a little shorter. The blooming period occurs from late spring to mid-summer and lasts about 2 months. There is no noticeable floral scent. Each flower is replaced by a silique about 1″ in length. This silique is narrowly cylindrical (about 1 mm. in diameter) and its contains 10-20 tiny seeds in a single row. The slender pedicels of the siliques (or flowers) are about ½” in length. The siliques and their pedicels are spreading-ascending in relation to the stalk of the raceme. Each tiny seed is somewhat flattened and oblongoid; it is some shade of orange-brown. The root system consists of a stout taproot. This plant spreads by reseeding itself; the seeds are small enough to be blown about by the wind.
The nectar and pollen of the flowers attract flower flies and possibly other insects. The caterpillars of the butterflies Pieris rapae (Cabbage White), Pontia protodice (Checkered White), and Anthocharis midea (Falcate Orangetip) feed on the foliage. The relationship of Descurainia spp. (Tansy Mustards) to birds and mammalian herbivores is poorly understood in the eastern states, although in the western states the seedpods are eaten by various species of quail and the foliage is eaten sparingly by Bighorn sheep, elk, and mule deer. However, all parts of the plant have been found to be somewhat toxic to livestock, especially horses and cattle (sheep and goats are more tolerant). The tiny seeds become sticky when wet, and may be carried about in the feathers of birds, fur of animals, or shoes of humans.
Cultivation: Flixweed flourishes in full sun, mesic to dry conditions, and almost any kind of soil. It is taller and more robust on fertile loam, and much smaller in size on dry sterile soil containing gravel or sand. During hot dry weather, the lower leaves may wither away.
Propagation: Seed – sow spring in situ.
Edible Uses: .….Young leaves and shoots – cooked. A bitter flavour. Used as a potherb. Seed – raw or cooked. A pungent taste, it is used as a mustard substitute. The seed can be ground into a powder, mixed with cornmeal and used to make bread, or as a thickening for soups etc. It can also be sprouted and added to salads etc. A nourishing and cooling beverage can be made by mixing the ground up seeds with water to make a thin batter. The seed contains 25.5 – 29.9% protein, 26.9 – 39.7% fat and 3.6 – 3.9% ash on a zero moisture basis.
Figures in grams (g) or miligrams (mg) per 100g of food.
Seed (Dry weight)
0 Calories per 100g
*Water : 0%
*Protein: 27.5g; Fat: 33g; Carbohydrate: 0g; Fibre: 0g; Ash: 3.7g;
*Minerals – Calcium: 0mg; Phosphorus: 0mg; Iron: 0mg; Magnesium: 0mg; Sodium: 0mg; Potassium: 0mg; Zinc: 0mg;
*Vitamins – A: 0mg; Thiamine (B1): 0mg; Riboflavin (B2): 0mg; Niacin: 0mg; B6: 0mg; C: 0mg;
A poultice of the plant has been used to ease the pain of toothache. The juice of the plant has been used in the treatment of chronic coughs, hoarseness and ulcerated sore throats. A strong decoction of the plant has proved excellent in the treatment of asthm. The flowers and the leaves are antiscorbutic and astringent. The seed is considered to be cardiotonic, demulcent, diuretic, expectorant, febrifuge, laxative, restorative and tonic. It is used in the treatment of asthma, fevers, bronchitis, oedema and dysentery. It is also used in the treatment of worms and calculus complaints. It is decocted with other herbs for treating various ailments. The seeds have formed a special remedy for sciatica. A poultice of the ground up seeds has been used on burns and sores.
Other Uses:….A semi-drying oil is obtained from the seed. Yields are not given. The leaves have been stored with corn to prevent it from going bad.
Disclaimer : The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplement, it is always advisable to consult with your own health care provider.