This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...

This is a preview. Log in through your library . Journal Information The American Fern Journal, a quarterly, international, scholarly journal that includes research papers on all aspects relating to ...

Global warming creates new ecological hotspots as predators move out and other species move in, study finds.

Abstract The Dryopteris varia complex is highly variable in morphology, resulting in taxonomic confusion in delimiting taxon boundaries and determining relationships. We have examined the variation in ...

Nature - Morphogenetic Studies of DryopterisNews Published: 04 February 1956 Morphogenetic Studies of Dryopteris Nature 177, 217–218 (1956) Cite this article ...

This long-legged wader is more often found near freshwater than its maritime cousin, the Bar-tailed Godwit, and has plainer plumage. A very scarce breeder, the Black-tailed Godwit is encountered in ...

List C is a list of permitted active, homeopathic and traditional medicine substances that are used to make a Veterinary Health Product (VHP). VHPs are low risk drugs in dosage form used to maintain ...