Tumbleweed (scientific name: Salsola salsola? L English name: Tumbleweed): also known as Russian thorn sand peng. Annual herb, 10- 100 cm tall, semi-shrub or shrub. There are coarse hairs and papillae. Stems erect, rarely ascending, branching from near base, branches arc-shaped.

The near-earth part crawls occasionally. Leaves alternate, sessile, filiform or narrowly linear, less than 1 mm wide, not fleshy, base not swollen, inflorescence usually spike-shaped, sometimes conical; 1 flower. The fruit is cell fruit, spherical, with membranous peel or juicy meat; Seeds transverse, oblique or erect.

Related introduction

Someone has done an experiment to cover the roots of tumbleweed with transparent plastic pipes to prevent tumbleweed from falling off. Surprisingly, after being covered with transparent plastic pipes, the roots of tumbleweed began to elongate until tumbleweed could fall off. Because the seeds of tumbleweed can only be scattered from the "grass ball" when rolling.

Tumbleweed is the most effective seed spreading tool. The ball shape of tumbleweed allows it to roll and bounce on all the ground, leaving seeds along the way every time it bounces and rolls.

But tumbleweeds also have weaknesses: they move with the wind. Some pests will hitchhike to new places with tumbleweeds to harm the local area.

Baidu Encyclopedia-tumbleweed (Erigeron Chenopodiaceae)