Pinus nelsonii Shaw
Description
A small pinyon pine with its needles in fascicles of three and persistent fascicle sheaths. The main stem often branches close to the ground. The bark is smooth with small furrows. The species is classified in Pinus subgenus Strobus section Parrya subsection Nelsoniae, a monotypic subsection.

Pinus nelsonii, San Luis Potosí.

Mature cone in December.

Immature cone in December.
Distribution
Dry woodlands and semi-desert scrublands in Nuevo León, Tamaulipas, and San Luis Potosí.

Map by Sergio Hernández León.