In this task, you're given a sentence and your task is to generate a simplified sentence that focuses on lexical paraphrasing from the original sentence given in the input.

wahlenbergia species have dispersed widely , even to oceanic islands , and there are four species known from the island of st helena , including the now extinct species w. roxburghii.
wahlenbergia species have broken up and moved away widely , even to oceanic islands , and there are four species known from the island of st helena , including the now gone forever species w. roxburghii.