Houstonia palmeri
# Houstonia palmeri

Houstonia palmeri, the Saltillo bluet, is a plant species in the family Rubiaceae, native to the Mexican states of Coahuila and Nuevo León.

Two varieties are recognized:

* Houstonia palmeri var. palmeri
* Houstonia palmeri var. muzquizana (B.L.Turner) Terrell
