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Houstonia acerosa acerosa

(Needle-leaf Bluet, Needleleaf Bluet)

Common Names

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Common Names in English:

Needle-leaf Bluet, Needleleaf Bluet

Description

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Family Rubiaceae

The Rubiaceae are trees , shrubs , or infrequently herbs comprising about 450 genera and 6,500 species, including some lianous forms. The leaves are simple and usually entire , and are opposite or sometimes whorled ; stipules are present and interpetiolar . The flowers are nearly always bisexual and actinomorphic , often heterostylous, and usually are in cymose inflorescences. The calyx is mostly somewhat reduced and 4-5-lobed or sometimes the lobes are obsolete or rarely one of them greatly expanded and brightly colored . The sympetalous corolla is mostly 4-5-lobed, occasionally with 3 or up to 10 lobes. The androecium consists of as many stamens as corolla lobes and is adnate to the corolla tube or epigynous zone, alternate with the lobes. The gynoecium consists of a single compound pistil of 2 or seldom more carpels, a single style , and a nearly always inferior ovary with the number of locules equaling the number of carpels, each with 1-many axile ovules. An epigynous nectary disk is usually present. The fruit is variable, sometimes forming multiples . -- Gerald Carr.

Taxonomy

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Unambiguous Synonyms

  1. Hedyotis acerosa Gray
  2. Hedyotis acerosa var. bigelovii (Greenm.) W.H. Lewis
  3. Hedyotis acerosa var. polypremoides (Gray) W.H. Lewis
  4. Hedyotis polypremoides (Gray) Shinners
  5. Houstonia acerosa (Gray) Gray ex Benth. & Hook. f.
  6. Houstonia acerosa subsp. polypremoides (Gray) Terrell
  7. Houstonia polypremoides Gray
  8. Houstonia polypremoides var. bigelovii Greenm.
  9. Oldenlandia acerosa (Gray) Gray

Similar Species

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Members of the genus Houstonia

There are approximately 83 species in this genus:

H. pusilla · H. acerosa (Needleleaf Bluet) · H. acerosa acerosa (Needle-Leaf Bluet) · H. acerosa polypremoides (Needleleaf Bluet) · H. acerosa var. acerosa · H. acerosa var. polypremoides (Needleleaf Bluet) · H. acerosa var. tamaulipana · H. angustifolia var. filifolia · H. asperula · H. asperula var. brandegeana · H. asperuloides var. bradegeana · H. asperuloides var. brandegeana · H. asperuloidis · H. biloba · H. brandegeana · H. caerulea (Azure Bluet) · H. caerulea 'Clone One' (Quaker Ladies) · H. caerulea f. albiflora · H. canadensis (Canadian Summer Bluet) · H. chlorantha · H. coerulea · H. coerulea var. elatior · H. coerulea var. toxonorum · H. correllii (Correll's Bluet) · H. crocea · H. croftiae (Croft's Bluet) · H. fasciculata (Cluster Bluet) · H. filifolia · H. galeottii · H. geniculata · H. gracilis · H. gracillima · H. greenei (Greene's Bluet) · H. humifusa (Mat Bluet) · H. humisfusa · H. kingii · H. lanceolata f. albiflora · H. lanceolata var. calycosa · H. latifolia · H. longifolia (Long-Leaf Summer Bluet) · H. longifolia var. longifolia · H. longifolia var. tenuifolia · H. macvaughii · H. michauxii · H. michauxii 'Fred Mullard' · H. micrantha (Southern Bluet) · H. montana var. montana · H. ouachitana (Ouachita Bluet) · H. palmeri · H. palmeri var. muzquizana · H. palmeri var. palmeri · H. parviflora (Greenman's Bluet) · H. polypremnoides · H. procumbens (Fairy Footprints) · H. prostrata (New Mexico Starviolet) · H. pulvinata var. pulvinata · H. purpurea (Large-Flowered Bluets) · H. purpurea f. pubescens · H. purpurea var. calycosa · H. purpurea var. calycosa Gray · H. purpurea var. montana · H. purpurea var. montana (Small) Terrell (Mountain Bluet) · H. purpurea var. purpurea · H. purpurea var. purpurea L. · H. pusilla (Least Bluets) · H. pusilla f. albiflora · H. pusilla f. rosea · H. pygnaea · H. reticulata · H. rosea (Rose Bluet) · H. rubra (Red Bluet) · H. salenia · H. serpyllifolia (Michaux Bluet) · H. serpyllifolia f. alba · H. sharpii · H. spellenbergii · H. stenophylla · H. stenophylla var. parviflora · H. subviscosa (Nodding Bluet) · H. tenuifolia f. leucantha · H. teretifolia · H. terrellii · H. wrightii (Pygmy Bluet)

Bibliography

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More Info

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Notes

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Contributors

Identifiers

Last Revised: 2008-08-05