it's just sowthistle.

is a very common wild flower. People have been eating bitter vegetables for more than 2, years, and they are often used as herbs. There are many kinds of bitter herbs, including bitter herbs with purple flowers, that is, bitter herbs with purple flowers.

As shown in the figure:

Extended information:

Alias: Swertia japonica Thunb., Swertia japonica Thunb., Sophora alopecuroides, Artemisia argyi Thunb., etc. Annual herbs or slightly semi-shrub-like, plants have bitter fragrance.

The stems are solitary or few, gray-white, slightly woody at the base, with a few short branches at the upper part. The leaves are thick and papery, with gray-white pubescence on them, and there are usually no false leaves or very small false leaves at the base.

The upper leaves and bract leaves are pinnately cleft, the head is oval, the corolla is tubular or goblet-shaped, there are glandular spots outside, the anthers are narrowly linear, the style is nearly as long as or slightly longer than the corolla, and the corolla is purple.

Reference: Kucaihua-Baidu Encyclopedia