红花又名草红花、红蓝花、刺红花等,为菊科一年生草本植物。红花株高30～90厘米、全体光滑无毛。茎直立,基部木质化,上部多分枝。叶互生,质硬,近于无柄而抱茎;卵形或卵状披针形,上部叶逐渐变小成苞片状,围绕头状花序。花序大,顶生,总苞片多列,花托扁平; Safflower, also known as grass safflower, red and blue flowers, thorn safflower, etc., is an annual herb of the Asteraceae family. Saffron plant height 30 to 90 cm, the whole smooth and hairless. Stems erect, woody at base, much branched above. Leaves are alternate, hard-edged, nearly sessile and amplexicaul; ovate or ovate-lanceolate, the upper leaves gradually diminish into bracts, around headlike inflorescences. Inflorescences large, terminal, sepals numerous, torus flat;