Complex sentence: Permission is needed from Trinity House to land on the island and only two botanists are known to have visited, the first, J E Lousley, in 1957, only recorded the invasive Hottentot fig ("Carpobrotus edulis").
Split into simpler sentences: Permission is needed from Trinity House to land on the island and only two botanists are known to have visited. The first, J. E. Lousley, in 1957, only recorded the invasive Hottentot fig ("Carpobrotus edulis").