The first volume devoted to anthropogenic effects on interactions between ants and flowering plants, considered major parts of terrestrial ecosystems.

A guide to more than 22,000 national and international organizations, including: trade, business, and commercial; environmental and agricultural; legal, governmental, public administration, and military; engineering, technological, and natural and social sciences; educational; cultural; social welfare; health and medical; public affairs; fraternal, nationality, and ethnic; religious; veterans', hereditary, and patriotic; hobby and avocational; athletic and sports; labor unions, associations, and federations; chambers of commerce and trade and tourism; Greek letter and related organizations; and fan clubs.

Outlines the development of the main branches of mycology.

Based on the acclaimed reference Lichens of North America, this resource for the classroom, field, and laboratory presents updated and expanded keys for the identification of over 2,000 species of lichens indigenous to the continent, twice the number covered by previous keys. The book includes a glossary illustrated with photographs by Sylvia Duran Sharnoff and Stephen Sharnoff and drawings by Susan Laurie-Bourque, all from the original book. The revised keys are an indispensable identification tool for botanists, students, scientists, and enthusiasts alike.--COVER.