The British dynasty of the Tudors was symbolized by the Tudor Rose.
The rose became truly "Royal" during the English Civil War; “The War of the Roses” (1455-1485). The winner, Tudor Henry VII, merged his Lancastrian White rose with the Red rose of his York bride creating the Tudor Rose, [the petals of a red rose enfolding the petals of a white rose.]
This "Rose of England" symbolized Unity and Respect and was worn as a symbol of Loyalty and Allegiance.
The Tudors were able to establish England as a world power by positioning their country as a peace-maker between the dueling powers of France and Spain/the Holy Roman Empire. They also gave England a century of dynastic stability. Most Tudor monarchs came to the throne [and remained on the throne] without strife. This lengthy period of peace allowed England a much-needed respite from the Lancastrian-Yorkist wars. Government ran more efficiently; royal power replaced that of aristocrats and there was a uniform system of justice and taxation throughout the country. And, as always in times of peace, the arts flourished.