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- ›Vascular Plants
- ›flowering plants
- ›Dicots
- ›Gentians, Dogbanes, Madders, and Allies
- ›madder family
- ›Rubioideae
- ›Spermacoceae
flowering bluets
Houstonia
Houstonia (bluet) is a genus of plants in the Rubiaceae family. Many species were formerly placed (along with other now-segregate genera) in a more inclusive Hedyotis.
26 branches of this genus, most-observed first
azure bluet
speciesHoustonia caerulea
tiny bluet
speciesHoustonia pusilla
summer bluet
speciesHoustonia purpurea
long-leaved bluets
speciesHoustonia longifolia
Thyme-leaved Bluet
speciesHoustonia serpyllifolia
roundleaf bluet
speciesHoustonia procumbens
Southern Bluet
speciesHoustonia micrantha
pygmy bluet
speciesHoustonia wrightii
Canadian Summer Bluet
speciesHoustonia canadensis
Rose Bluet
speciesHoustonia rosea
Needleleaf Bluet
speciesHoustonia acerosa
Red bluet
speciesHoustonia rubra
Roan Mountain bluet
speciesHoustonia montana
Matted Bluet
speciesHoustonia humifusa
Cumberland Bluets
speciesHoustonia rupestris
Ouachita bluet
speciesHoustonia ouachitana
Greenman's bluet
speciesHoustonia parviflora
Nodding Bluet
speciesHoustonia subviscosa
Houstonia palmeri
speciesHoustonia palmeri
Houstonia spellenbergii
speciesHoustonia spellenbergii
Houstonia prostrata
speciesHoustonia prostrata
Houstonia teretifolia
speciesHoustonia teretifolia
Houstonia macvaughii
speciesHoustonia macvaughii
Houstonia sharpii
speciesHoustonia sharpii
Correll's Bluet
speciesHoustonia correllii
Croft's Bluets
speciesHoustonia croftiae
Where it lives
Recorded sightings
—
geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Houstonia in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 69749.