This member of the Bixaceae* family was described by Thomas Archibald Sprague and Lawrence Athelstan Molesworth Riley in 1922. It is found in the Southern part of North America, growing in lime- or granite gravel, in about 1.500 meters height with some water and lots of sun. The tuberous roots can grow to two centimetres in diameter, the leaves to eight or even 40 centimetres height. The flowers are yellow and orange, and it is probably only possible to reproduce it by seeds.
The genera name means 'looking like Rhexia'. The species name after the Mexican botanist Francisco González Medrano, 1905-1964.
