NguyenMoc
Botanical Encyclopedia
Home/Plant species/Houstonia rubra
Red-bluet SF River
RubiaceaeNE · Not Evaluated

Houstonia rubra

Houstonia rubra

Houstonia rubra, the red bluet, is a plant species in the Rubiaceae. It is a small herb with white to pink to 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.

No ratings yet — be the first!

0
Views
3
Languages
Oct 8, 2026
Updated
1.0.0
Version
LanguagesVIENZH

Gallery

Houstonia rubra - Flickr - aspidoscelisHoustonia rubra - Flickr - aspidoscelis
Red-bluet SF RiverRed-bluet SF River
Houstonia rubra - Flickr - aspidoscelis (1)Houstonia rubra - Flickr - aspidoscelis (1)
Houstonia rubra - Flickr - aspidoscelis (2)Houstonia rubra - Flickr - aspidoscelis (2)
Houstonia rubra - Flickr - aspidoscelisHoustonia rubra - Flickr - aspidoscelis
Red-bluet SF RiverRed-bluet SF River
1 / 4

Overview

Houstonia rubra is a plant species in the family Rubiaceae. GBIF holds 866 occurrence records across 2 countries. Its records concentrate in United States, Mexico.

Distribution & origin

Share of recorded occurrences by region
  • United States64%
  • Mexico36%

References

  1. 1Houstonia rubra — Wikipedia — Wikipedia (CC BY-SA 4.0), 2026
  2. 2World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew — Wikipedia,
  3. 3County Houstonia map — Wikipedia,
  4. 4GBIF — occurrence records of Houstonia rubra — GBIF, 2026
  5. 5Hình ảnh — Wikimedia Commons (4 ảnh, giấy phép CC/PD) — Wikimedia Commons, 2026
NguyenMoc

Help build an open knowledge base

Are you a researcher, artisan or nature lover? Contribute, add or correct content so NguyenMoc keeps getting more accurate.