Lists a total of 965 species in 168 genera in the two volumes, describing the species including distribution maps covering Alaska, Canada, Greenland and Iceland
A close look at the mute browns and grays of rocks and trees around us is often rewarded by the striking orange and yellow hues of lichens. This convenient guid
Antarctica's severe climate and restricted area of ice-free habitats limit the biodiversity and biota of its terrestrial ecosystems. Throughout much of this wil