FloridayoudaoicibaDictYouDict[Florida 词源字典]
U.S. state, formerly a Spanish colony, probably from Spanish Pascua florida, literally "flowering Easter," a Spanish name for Palm Sunday, and so named because the peninsula was discovered on that day (March 20, 1513) by the expedition of Spanish explorer Ponce de León (1474-1521). From Latin floridus "flowery, in bloom" (see florid). Related: Floridian (1580s as a noun, in reference to the natives; 1819 as an adjective).[Florida etymology, Florida origin, 英语词源]
palm (n.2)youdaoicibaDictYouDict
tropical tree, Old English palma, Old French palme, both from Latin palma "palm tree," originally "palm of the hand;" the tree so called from the shape of its leaves, like fingers of a hand (see palm (n.1)).

The word traveled early to northern Europe, where the tree does not grow, via Christianity, and took root in the local languages (such as Old Saxon palma, Old High German palma, Old Norse palmr). Palm Sunday is Old English palm-sunnandæg.

In ancient times, a leaf or frond was carried or worn as a symbol of victory or triumph, or on feast days; hence figurative use of palm for "victory, triumph" (late 14c.). Palm court "large room in a hotel, etc., usually decorated with potted palms" first recorded 1908.
sallow (n.)youdaoicibaDictYouDict
"shrubby willow plant," Old English sealh (Anglian salh), from Proto-Germanic *salhjon (cognates: Old Norse selja, Old High German salaha, and first element in German compound Salweide), from PIE *sal(i)k- "willow" (cognates: Latin salix "willow," Middle Irish sail, Welsh helygen, Breton halegen "willow"). French saule "willow" is from Frankish salha, from the Germanic root. Used in Palm Sunday processions and decorations in England before the importing of real palm leaves began.