Amianthium is a North American genus of perennial plants growing from bulbs.

It contains the single known species Amianthium muscitoxicum, known in English as fly poison from a literal translation of the Latin epithet muscitoxicum, and is noted for its pretty flowers and its toxic alkaloid content.

The bulb was mixed with sugar by American colonists to kill flies.

[4][5] The toxic alkaloids present in the roots and leaves include jervine and amianthine.

[4] It is native to eastern North America, as far north as Pennsylvania, west roughly to the Appalachian Mountains (with an additional area in the Ozarks), and south to northern Florida and eastern Louisiana.