[1][2][3][4] It is an annual native to western North America, ranging from British Columbia to northwestern Mexico.

[5] Erythranthe nasuta evolved from Erythranthe guttata in central California between 200,000 and 500,000 years ago and since then has become primarily a self-pollinator.

Other differences have occurred since then, such as genetic code variations and variations in plant morphology.

[6][7] E. nasuta prefers a drier habitat than E.

[8] This Lamiales article is a stub.