E. alpinum 'Rubrum' Epimedium × rubrum, known as red barrenwort, is a species of perennial flowering plant in the family Berberidaceae, cultivated in gardens.

[3] The Royal Horticultural Society has given it the Award of Garden Merit (AGM).

The flowers appear with the young leaves in spring, and are borne on a loose raceme.

Individual flowers are about 2 cm (0.8 in) across, with red sepals and yellow petals.

[2][3] Epimedium × rubrum is recommended for cultivation in shade or part-shade in moist soil, although it tolerates drier conditions when well-established.