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Species in Houstonia(30)
needleleaf bluet
Houstonia acerosa
Houstonia asperuloides
Azure Bluet
Houstonia caerulea
Canada Bluet
Houstonia canadensis
Houstonia correlliae
Correll's bluet
Houstonia correllii
Houstonia crocea
Croft's Bluets
Houstonia croftiae
matted bluet
Houstonia humifusa
Longleaf Bluet
Houstonia longifolia
Houstonia macrosepala
Houstonia macvaughii
southern bluet
Houstonia micrantha
Ouachita bluet
Houstonia ouachitana
Houstonia palmeri
Greenman's bluet
Houstonia parviflora
Innocence
Houstonia procumbens
New Mexico starviolet
Houstonia prostrata
Venus' Pride
Houstonia purpurea
tiny bluet
Houstonia pusilla
rose bluet
Houstonia rosea
red bluet
Houstonia rubra
Houstonia salenia
thymeleaf bluet
Houstonia serpyllifolia
Houstonia sharpii
Houstonia spellenbergii
Houstonia stenophylla
nodding bluet
Houstonia subviscosa
Houstonia teretifolia
pygmy bluet
Houstonia wrightii