horny goat weed

E. brevicornu is a clump-forming rhizomatous perennial 20-60cm high, with deciduous, heart-shaped leaves which open light green, blotched with bronze, and mature to darker green, and starry flowers with white inner sepals, small white petals that have yellow margins at the mouth and only tiny spurs, and bright yellow anthers, in early spring; Epimedium leaves may be used for their nests by leaf-cutting bees