The epithet "eludens" refers to the fact that the plant had eluded botanists for many years.

[1] The species is considered critically imperiled in the United States because it is known from a single location, in Santa Cruz County, Arizona, a few km north of the Mexican border.

[1][2] The plants general appearance is unusual for the family.

It is a small, delicate, erect herb with yellow flowers.

It occurs in moist habitats in forested areas.