Houstonia acerosa

Houstonia acerosa, the New Mexico bluet or needleleaf bluet, is a plant species native to Chihuahua, Coahuila, Nuevo León, Tamaulipas, San Luis Potosí, Texas and New Mexico.

Houstonia acerosa is an herb up to 20 cm tall, with narrow needle-like leaves and white or purplish flowers.

Varieties

Three varieties of the species are widely accepted:

• Houstonia acerosa var. acerosa - Coahuila, Nuevo León, Tamaulipas, San Luis Potosí, Texas
• Houstonia acerosa var. polypremoides <small>(A.Gray) Terrell</small> - Chihuahua, Coahuila, New Mexico, trans-Pecos Texas
• Houstonia acerosa var. tamaulipana <small>(B.L.Turner) Terrell</small> - Tamaulipas

References

External links

• Photo of herbarium specimen at Missouri Botanical Garden, Wright 237, type specimen of Houstonia acerosa
• Gardening Europe Houstonia acerosa
• Chihuahuan Desert Plants, University of Texas at El Paso, Hedyotis acerosa