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Contains all Darwin publications and many of his handwritten manuscripts. Also available is a comprehensive bibliography, the largest manuscript catalog, descriptions of Darwin's Beagle specimens, numerous ancillary texts and much more.
Freely accessible global access to knowledge about life on Earth. Content provided by museums, libraries, universities, research centers, individual scientists, graduate students and citizen science communities.
From the U. S. Department of Agriculture Natural Resources Conservation Service. "The PLANTS Database provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories."
"Science.gov searches over 60 databases and over 2,200 scientific websites to provide users with access to more than 200 million pages of authoritative federal science information including research and development results."
The Tree of Life Web Project (ToL) is a collaborative effort of biologists and nature enthusiasts from around the world. On more than 10,000 World Wide Web pages, the project provides information about biodiversity, the characteristics of different groups of organisms, and their evolutionary history (phylogeny).
This site provides a wealth of information about flora of Colorado, New Mexico, Arizona and Utah as well as resources and data for all plant enthusiasts. Scroll down through the main page to find key information about plant names, biographies of naturalists, glossaries and much more.