Yes there is a flower beginning with x. It's called Xeranthemum Annuum (Immortelle). One of the everlasting flowers, whose blooms are dried and used for Winter decoration. The daisy-like flowers are produced freely in Summer and colours include shades of pink, lilac, purple and white. Usualy sold in a mixture such as "Double Mixed" with crested double cornflower-like blooms on long stems.
There is at least one flower that I know of that starts with the letter "x":
Xeranthemum
I don't think there is...Sorry...
nope
xutionguous
Malva sylvestris Mentha pulegium Mentha x villosa Misopates orontium
forget-me-not
jonquil
Begonia
dandilion
lavender
Violets vflower
Jasmine
jonquil
No canon warrior names begin with 'x'.
violet <33
There are no Disney princesses or princes whose names start with x.