echium plantagineum opr purple vipers-bugloss

trifolium arvense haresfoot clover rabbitfoot fabaceae soil level herbs springtime seasonal wild plants grasslands botanical diversity pastures nature isolated annual rough hairy lanceolate leaves purple white background cut identification botany meadows mediterranean flora herbage one herbarium specimen voucher mounted plant sample collection data research work identity herbaria scientific documentation misidentifications badajoz valdebotoa extremadura spain buglosa