@article {978, title = {Hypericum x desetangsii Lamotte nm. desetangsii in Yorkshire, with special reference to its spread along railways.}, journal = {Watsonia}, volume = {18}, number = {part 1}, year = {1990}, note = {EnGeog=1KBD, Royal Botanic Gardens, Kew.}, pages = {63-67 (1990) -}, keywords = {Systematics: ANGIOSPERMAE GUTTIFERAE: HYPERICUM}, author = {Crackles, FE} }