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Rubiaceae
Houstonia
Houstonia
Genus of the Rubiaceae family with
35
species.
Houstonia macvaughii
Rubiaceae
4%
Houstonia purpurea var. purpurea
Rubiaceae
6%
Houstonia purpurea var. calycosa
Rubiaceae
6%
Houstonia teretifolia
Rubiaceae
4%
Houstonia acerosa
Rubiaceae
8%
Houstonia canadensis
Rubiaceae
8%
Houstonia correllii
Rubiaceae
6%
Houstonia longifolia
Longleaf summer bluet
Rubiaceae
10%
Houstonia micrantha
Southern bluet
Rubiaceae
10%
Houstonia procumbens
Rubiaceae
8%
Houstonia purpurea
Venus' pride
Rubiaceae
10%
Houstonia serpyllifolia
Thymeleaf bluet
Rubiaceae
6%
Houstonia subviscosa
Rubiaceae
8%
Houstonia caerulea
Quaker-ladies
Rubiaceae
10%
Houstonia purpurea var. montana
Rubiaceae
6%
Houstonia wrightii
Rubiaceae
6%
Houstonia acerosa var. tamaulipana
Rubiaceae
4%
Houstonia palmeri var. muzquizana
Rubiaceae
4%
Houstonia palmeri
Rubiaceae
6%
Houstonia croftiae
Rubiaceae
6%
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