Blue thorn head, about its resume

Blue thorn head family genus

Blue thorn head genus of Compositae.

Blue thorn head distribution

Blue thorns are mainly distributed in Tianshan area of Xinjiang, and are also widely distributed in the Soviet Union, central and southern Europe.

Morphological characteristics of blue thorn head

Blue thorn head is a perennial herb, 50-150 cm high. The blue thorn head stem is solitary, the stem branch is stout, covered by dense long nodal hairs and sparse spider silk-like thin hairs.

The leaves of the base and lower stem of the blue thorn head are full-shaped and broadly lanceolate, pinnatifid, the leaf margin is spiny denticulate, the leaf tip is acuminate, and the leaves of the plant become smaller gradually from the base to the end; the leaf texture is thinner, papery feel, the positive and negative sides of the leaf are different in color, the upper surface is green, there are dense short rough hairs, the lower surface is grayish white, with thin spider silk woolly; the blue thorn flower has light blue or white, the Corolla is deeply divided, and the lobes are linear. The blue thorn achene is inverted conical, and the fruit surface is covered with long straight hairs with yellow dense and appressed long straight hairs; the flowering and fruiting period is from August to September.

Growth habit of blue thorn head

Blue thorn head is very adaptable, resistant to dry climate and barren soil, like cool climate and sandy loam with good drainage and permeability, strictly avoid hot, wet and waterlogging environment, and extensive management. Blue thorn head planting can be used as a flower border to increase ornamental; planted on both sides of the road, can soften the stiff road curve.