Houstonia_spellenbergii
Houstonia spellenbergii
Species of plant
Houstonia spellenbergii is a plant species in the family Rubiaceae.[2][3] It is native to the western part of the state of Chihuahua in northern Mexico, at an elevation of approximately 2100 m in the Sierra Madre Occidental near the Basaseáchic waterfall.[1][3][4]