名詞 ragwort:

1. widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity
   同義詞：tansy ragwort, ragweed, benweed, Senecio jacobaea
2. American ragwort with yellow flowers
   同義詞：butterweed, Senecio glabellus

rag.wort

n.（名詞）
Any of several plants of the very large genusSenecio in the composite family, having yellow flower heads, especially S. aureus of eastern North America and S. jacobaea of Europe.
千里光屬：一種菊科千里光 這個(gè)大屬的草木植物，有黃色花冠，尤指北美洲東部生長(zhǎng)的 金色千里光 和歐洲生長(zhǎng)的 雅克賓千里光

來源：
[From the ragged shape of its leaves]
[源于其葉片破碎的形狀]