Cephalanthus salicifolius is a species of flowering plant in the family Rubiaceae.

[5][6][2] Common names include Mexican buttonbush, mimbre, botoncillo, and Jazmin blanco.

[7] Its native range extends from the banks of the southernmost stretch of the Rio Grande in Cameron and Hidalgo Counties of Texas[8] through much of Mexico from Coahuila to Oaxaca; a disjunct population exists in Honduras.

[9][10] Like other species in its genus, Mexican buttonbush grows in the wet soils of riparian zones, swamps, and pond margins.

[9] The white flowers are produced from March to July; the fruit is a collection of brown nutlets.