Tetraclea coulteri
# Tetraclea coulteri

Tetraclea coulteri, or Coulter's wrinklefruit, is a perennial plant in the mint family (Lamiaceae) that grows on sandy flats and coarse gravelly slopes of the Sonoran Desert, from southern Arizona to western Texas and northern $Mexico.^{:57}$ Its white flowers open at night and close with the warmth of $day.^{:57}$

