A new study reveals the profound ecological effects of wolves and other large carnivores in Yellowstone National Park, ...

The Huachuca water umbel is an herbaceous, perennial plant with slender, erect leaves. The plants once flourished in extensive riparian habitats in southeastern Arizona and northern Sonora, Mexico, ...

It is native to the Americas and parts of Asia, with some species from Africa. The polypody fern prefers moist sites with some shade and makes an interesting woodland or riparian specimen in the ...