Annual plant with red or reddish stems up to 2.5 mm. The flowers are small (2-3 mm), pink or pinkish-white, on short stalks, gathered in spherical balls with a diameter of 1.5 cm, with small bracts. Obconical cup, with four (sometimes five) shirokotreugolnymi obtuse lobes. Corolla calyx, with 4-5 oval-ovate straight blades, with inward curved tip; scales are small, with few fringe is at the top, do not reach the middle of the corolla tube. Columns of two, they are divergent, filiform, with a thread-like stigmas. Fruit-flattened-spherical capsule, dehiscing across lid, with four seeds. Blooms from June to August, the fruits ripen in June and sentyabre.Evraziatskoe quite widespread plant. In our country, is found in the European part, the Caucasus, Siberia and the Far East. In Central Russia, common plant in all areas.
It grows in meadows, forest edges, clearings, thickets, forests, on the banks of ponds, gardens, parks, gardens, fields, vacant lots, roadsides. Parasitic on many wild and farmed herbaceous plants, rarely in some trees and bushes.
Noxious weed, causing damage to crops of clover, alfalfa, vetch, hemp, tobacco, and other crops. Sticks in nurseries for young seedlings currants, gooseberries, lilacs.
In Central Russia meets — Dodder flax — a plant with thin thread-like, almost straight-line stems and small yellowish-white flowers in dense globular inflorescence. Flowers with a spherical cup and slightly above its rim with five short shirokotreugolnymi blades. Fruits — flattened-spherical capsule. Blooms from June to August, the seeds ripen about the same time. Parasitic on flax (sometimes affects this crop and weeds), so the area of weed linen coincides exactly with the area of the promotion of a culture of spinning plants. In Central Russia flax are quite widely in the western and northern regions Nechernozemie here and grow this type of weed. With mass distribution causes significant damage to agriculture, as significantly reduces the yield of flax.