Rank Species | ||
Similar Houstonia serpyllifolia, Houstonia pusilla, Houstonia, Houstonia longifolia, Houstonia purpurea | ||
Houstonia rubra, the red bluet, is a plant species in the Rubiaceae. It is a small herb with red to reddish-purple flowers, native to the southwestern United States and northern and central Mexico: Coahuila, Nuevo León, Hidalgo, Zacatecas, Guanajuato, Puebla, Sonora, Durango, Chihuahua, Arizona, New Mexico, southeastern Utah and western Texas.
References
Houstonia rubra Wikipedia(Text) CC BY-SA