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.[1][2][3][4]
| Houstonia acerosa | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Gentianales |
| Family: | Rubiaceae |
| Genus: | Houstonia |
| Species: | H. acerosa
|
| Binomial name | |
| Houstonia acerosa (A.Gray) Benth. & Hook.f.
| |
| Synonyms[1][2] | |
| |
Houstonia acerosa is an herb up to 20 cm tall, with narrow needle-like leaves and white or purplish flowers.[5][6][7]
Varieties edit
Three varieties of the species are widely accepted:[1][2]
- Houstonia acerosa var. acerosa - Coahuila, Nuevo León, Tamaulipas, San Luis Potosí, Texas[7]
- Houstonia acerosa var. polypremoides (A.Gray) Terrell - Chihuahua, Coahuila, New Mexico, trans-Pecos Texas[7]
- Houstonia acerosa var. tamaulipana (B.L.Turner) Terrell - Tamaulipas[7]
References edit
- ^ a b c The Plant List Houstonia acerosa
- ^ a b c Kew World Checklist of Selected Plant Families
- ^ Biota of North America Program
- ^ USDA Plant profile
- ^ Gray, Asa. 1852. Smithsonian Contributions to Knowledge 3(5): 81, Hedyotis acerosa
- ^ Bentham, George & Hooker, Joseph Dalton. 1873. Genera Plantarum 2(1): 60. Houstonia acerosa
- ^ a b c d Terrell, Edward Everett. 2001. Taxonomic review of Houstonia acerosa and H. palmeri with notes on Hedyotis and Oldenlandia (Rubiaceae). Sida 19:913-922. 2001
External links edit
- 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
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