About 34,000 plant species throughout the world, or a quarter of the total species of flora on the planet, face extinction in the coming years. Nearly 600 plant species in the eUnited States are listed as endangered; 448 animal species are considered endangered. The U.S. Fish and Wildlife Service has also prescribed habitat conservation plans for 480 areas, where measures have been taken to minimise the impact on habitats, restore ecosystems, and sometimes relocate plants and animals.
Observe the instructions displayed at the entrances to parks – they are there for a reason. You will not disturb the wildlife if you keep your dog on a leash, and by following the marked trails you can avoid accidentally stepping on protected plants.
-Abrams, “365 Ways To Save The Earth”, 2008