Johanneshowellia is a genus of flowering plants belonging to the family Polygonaceae.

[1][2][3] Its native range is south-western USA.

It is found in the states of California, Nevada and Utah.

[1] The genus name of Johanneshowellia is in honour of John Thomas Howell (1903–1994), an American botanist and taxonomist.

[4] It was first described and published in Brittonia Vol.56 on page 299 in 2004.