Annual Fleabane (Erigeron annuus, 一年蓬).
There are many invasive plants (pokeweed and alligatorweed seem the most common) spreading along the banks of the Xiang river. Among them, annual fleabane is an assertive but not dominant weed; but it will raise its daisy-like flower heads and roughly-toothed leaves wherever it is allowed to thrive and is particularly swift to grow where the soil has been violently disturbed through human activity.
