Thistlian refers to an agender or genderless person who is attracted to men. This attraction can be exclusive or not.
History
Thistlian was coined by Tumblr user Genderless-Gibberish on July 9, 2018[1]. The term comes from the thistle flower.
Flag
The flag was designed by Tumblr user Nooonbinaryyyy on July 9, 2018[2]. The first three stripes come from the colors of the thistle flower. The white stripe represents the absence of gender. The green comes from the agender flag.