Family: Onagraceae (The Evening Primrose Family) Genus: Epilobium | Species: hirsutum Description: Sometimes called small-flowered willowherb; Members in the entire group are also called willowherb rather than willowweed; Very much resembles common speedwell and northern willowherb. It has branching, hairy stems and its tiny, pale pink flowers are borne on the ends of leafless stalks