Eureka, California
"Eureka" received its name from a Greek word meaning "I have found it!" This exuberant statement of successful (or hopeful) gold rush miners is also the official motto of the State of California. Eureka is the only U.S. location to use the same seal as the state for its seal.
Birch
"Betula" species are organised into five subgenera.
"Note: many American texts have "B. pendula" and "B. pubescens" confused, though they are distinct species with different chromosome numbers."The common name "birch" comes from Old English "birce", "bierce", from Proto-Germanic *"berk-jōn" (cf. German "Birke", West Frisian "bjirk"), an adjectival formation from *"berkōn" (cf. Dutch "berk", Low German "Bark", Danish "birk", Norwegian "bjørk"), itself from the Proto-Indo-European root *"bʰerHǵ-" ~ "bʰrHǵ"-, which also gave Lithuanian "béržas", Latvian "Bērzs", Russian "beréza", Ukrainian "beréza", Albanian "bredh" ‘fir’, Ossetian "bærz(æ)", Sanskrit "bhurja", Polish "brzoza", Latin "fraxinus" ‘ash (tree)’. This root is presumably derived from *"bʰreh₁ǵ-" ‘to shine’, in reference to the birch's white bark. The Proto-Germanic rune "berkanan" is named after the birch.