Euphorbia (scientific name Gomphrena globosa L.), alias: Euphorbia, an annual erect herb of Amaranthaceae and Euphorbia, with a height of 20-60 cm; The flowering and fruiting period is from June to September. Bright colors, luster, flowers do not fade after drying, unchanged for a long time, hence the name "Qianrihong".

Evergreen is fond of sunshine, resistant to dry heat and strong in sex. It is native to tropical America and is a common flower in tropical and subtropical regions. For ornamental purposes, the flower heads remain unchanged for a long time. Besides being used as flower beds and bonsai, it can also be used as decorations such as wreaths and flower baskets.

The inflorescence is spherical and consists of most small flowers, with a diameter of 15 ~ 2 cm. There are often 2 leaflike involucral bracts at the base, which are green and densely villous at the lower surface; There are bracteoles 3 at the base of the floret, the outer wheel 1 oval, the inner wheel 2 triangular-lanceolate, purple-red, the perianth 5 purple-red, the outer part densely covered with white, slender; Stamens 5, filaments fused to form a tube; Ovary ovoid, stigma 2-lobed. Utricle is spherical. A slight breath, a faint taste.