butterweed

名词 butterweed:

1. American ragwort with yellow flowers
   同义词：ragwort, Senecio glabellus
2. any of several yellow-flowered plants of the genus Packera; often placed in genus Senecio

but.ter.weed

n.（名词）
A succulent annual or biennial plant(Senecio glabellus), native to the eastern United States and having pinnately divided leaves and bright yellow, radiate flower heads.
千里光属植物：一种一年或两年生的多汁植物（美洲千里光 千里光属） ，产于美国东部，生有羽状裂叶和亮黄色辐射状花冠
The horseweed.
加拿大飞蓬