The German noun Fuchs** means the same as its native English cognate fox. Just as Fox serves as a family name in English, Fuchs does in German, and it so happens that the genus of plants called Fuchsia was named after the German botanist Leonhart Fuchs, who lived from 1501 to 1566. Because some of those plants produce flowers of a vivid reddish purple, that hue has been given the name fucsia/fuchsia. As far as I know, Spanish speakers don’t mess up their word for that color, but English speakers have mispronounced fuchsia for so long that the standard pronunciation has become fyoo-shuh. As a result of that pronunciation, fuchsia is high on the list of the most often misspelled English words, with *fuschia probably appearing more often than the correct fuchsia.
** German still capitalizes its nouns, as English once did.
© 2015 Steven Schwartzman