Houstonia (genus)
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 Houstonia caerulea
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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.
Bluets are often small and delicate. For example, H. rosea may attain a height of only one inch. Some species have a single-stem, while others are more "bunchy." Flowers may be blue, purple, lavender, white, or rose, often with shades of one color present in a single population. Flowers have four sepals, a salverform corolla with four lobes, and an inferior ovary. Some species exhibit heterostyly. The fruit is many-seeded capsule which usually dehisces via a suture across the apex; often the capsule is roughly heart-shaped.
[edit] Species
- Houstonia acerosa
- Houstonia angustifolia
- Houstonia caerulea Azure bluet
- Houstonia calycosa
- Houstonia canadensis Canadian summer bluet
- Houstonia ciliolata
- Houstonia setiscaphia
- Houstonia correllii Correll's bluet
- Houstonia croftiae Croft's bluet
- Houstonia filifolia
- Houstonia floridana
- Houstonia humifusa Matted bluet
- Houstonia lanceolata
- Houstonia longifolia Longleaf summer bluet
- Houstonia micrantha Southern bluet
- Houstonia minima
- Houstonia montana
- Houstonia mullerae
- Houstonia nigricans Diamondflowers
- Houstonia ouachitana Ouachita bluet
- Houstonia parviflora Greenman's bluet
- Houstonia patens
- Houstonia polypremoides
- Houstonia procumbens Roundleaf bluet
- Houstonia pulvinata
- Houstonia purpurea Venus' pride
- Houstonia pusilla Tiny bluet
- Houstonia pygmaea
- Houstonia rigidiuscula
- Houstonia rosea Rose bluet
- Houstonia rotundifolia
- Houstonia rubra Red bluet
- Houstonia salina
- Houstonia serpyllifolia Thymeleaf bluet
- Houstonia subviscosa Nodding bluet
- Houstonia tenuifolia
- Houstonia tenuis
- Houstonia wrightii Pygmy bluet
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This Rubiaceae article is a stub. Please help Wikipedia by expanding it. |
