TY - JOUR T1 - On a Discontinuous Variation Occurring in Biscutella laevigata JF - Proceedings of the Royal Society of London (1854-1905) VL - 62 SP - 11 EP - 26 PY - 1897/01/01/ UR - http://dx.doi.org/10.1098/rspl.1897.0073 M3 - doi:10.1098/rspl.1897.0073 AU - Saunders, E. ER -