ⓘ Conringia orientalis

                                     

ⓘ Conringia orientalis

Conringia orientalis is a species of flowering plant in the mustard family known by the common name hares ear mustard. It is native to Eurasia but it is known elsewhere as an introduced species and sometimes a noxious weed. It is weedy in its native range and also in North America, where it is a widespread invasive species, especially in central Canada.

This annual herb producing erect, unbranched stem, from 30 to 70 cm from 12 to 28 inches in height. Thick waxy leaves are generally oval, up to 9 cm 3 1 ⁄ 2 inches long, and clasp the stem at their bases. The flower is enclosed in pointed sepals and yellow petals clawed, about 1 centimeter to 1 ⁄ 3 inch long. Fruit beaded silique up to 13 cm 5 inches in length. The plant is considered poisonous to livestock.