[1] Magnolia tamaulipana is native to the Sierra Madre Oriental of Nuevo León and Tamaulipas states.

The plants produce large protogynous flowers which are viable for up to 24 hours.

The species' population is in decline across its native range, despite living within a protected area.

The causes of its population decline aren't well understood, but a study of the effects of hurricanes in the region indicated that hurricanes uproot and damage many mature trees, and the species may have lower regeneration capacity than other cloud forest trees.

Other factors causing the population decline may include loss of habitat from deforestation and urbanization.