Rubiaceae
Longleaf summer bluet
Houstonia longifolia
- Family
- Rubiaceae
- Genus
- Houstonia
Pet and kid safety: not checked yet. Check pet-safe plants

Is yours looking unwell? Scan your plant — free
Common names
By language (1)
- English
- Longleaf summer bluet
Synonyms
- Chamisme longifolia (Gaertn.) Nieuwl.
- Hedyotis longifolia (Gaertn.) Hook.
- Hedyotis purpurea var. longifolia (Gaertn.) Fosberg
- Houstonia purpurea var. longifolia (Gaertn.) A.Gray
- Oldenlandia purpurea var. longifolia (Gaertn.) A.Gray
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Perennial
- In the US and Canada
- Canada: native, Lower 48 states: native
Photos

Photo: Superior National Forest, CC BY 2.0, from Wikimedia Commons 
Photo: Fritzflohrreynolds, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Fritzflohrreynolds, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Douglas Goldman, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Douglas Goldman, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Douglas Goldman, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Douglas Goldman, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Douglas Goldman, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Douglas Goldman, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Douglas Goldman, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Alex Abair, CC BY 4.0, from Wikimedia Commons 
Photo: Alex Abair, CC BY 4.0, from Wikimedia Commons
More in Houstonia
- Venus' prideHoustonia purpureaRubiaceae
- Azure bluetHoustonia caeruleaRubiaceae
- Canadian summer bluetHoustonia canadensisRubiaceae
- Matted bluetHoustonia humifusaRubiaceae
- Roundleaf bluetHoustonia procumbensRubiaceae
- Tiny bluetHoustonia pusillaRubiaceae
- Red bluetHoustonia rubraRubiaceae
- Thymeleaf bluetHoustonia serpyllifoliaRubiaceae
- Pygmy bluetHoustonia wrightiiRubiaceae
- Needleleaf bluetHoustonia acerosaRubiaceae
- Southern bluetHoustonia micranthaRubiaceae
- Correll's bluetHoustonia correlliiRubiaceae
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.