Trichocoronis rivularis A.Gray Shinnersia rivularis, known as the Rio Grande bugheal[2] or Mexican oak leaf plant, is an aquatic plant native to Texas, Coahuila, and Nuevo León.

[3][4][1][5] It is thought to be related to two other aquatic genera in this tribe, Sclerolepis and Trichocoronis.

[6] The roots live in the muck at the bottom of shallow slow-moving water (for example, along a stream), and the stem extends above the water slightly (less than 10 centimetres).

[7][8] Shinnersia is a common freshwater aquarium plant, and can sometimes be found having escaped cultivation.

[9] The genus is named in honor of Lloyd H. Shinners of the Southern Methodist University.