names: Siberian or Siberian willow dock Synonyms: Rumex salicifolius var. angustifolius Meisner Treatment appears in FNA Volume 5. Treatment on page 513. Mentioned
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flammula Linnaeus Alan T. Whittemore Synonyms: Ranunculus flammula var. angustifolius Treatment appears in FNA Volume 3. Stems erect to prostrate, 0.8-3 mm
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Synonyms: Ranunculus oblongifolius Elliott Ranunculus pusillus var. angustifolius (Engelmann ex Engelmann & A. Gray) L. D. Benson Ranunculus tener Treatment
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Senecio gibbonsii Greene Senecio saliens Rydberg Senecio triangularis var. angustifolius G. N. Jones Treatment appears in FNA Volume 20. Treatment on page 566
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IllustratedEndemic Synonyms: Erigeron callianthemus Greene Erigeron peregrinus var. angustifolius (Greene) Cronquist Erigeron peregrinus subsp. callianthemus (Greene)
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The later homonym Mimulus angustifolius (Greene) A. L. Grant 1925, not Hochstetter ex Richard 1850, based on Eunanus angustifolius, pertains here. None. None
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names: Woodland sunflower Endemic Synonyms: Helianthus divaricatus var. angustifolius Kuntze Treatment appears in FNA Volume 21. Treatment on page 157. Mentioned
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drummondii Nuttall Erysimum drummondii (A. Gray) Lunell Streptanthus angustifolius Turritis drummondii Treatment appears in FNA Volume 7. Mentioned on page
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Map Ala., Fla., Ga., La., S.C. Helianthus simulans is similar to H. angustifolius, but much more robust with larger leaves, and to H. floridanus, but with
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slightly bulging. It is closely related to two other tropical species, F. angustifolius Sullivant and F. yucatanensis Steere, both of which have limbate leaves
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as an endangered species. It has been suggested to be a hybrid of H. angustifolius and H. eggertii or H. grosseserratus; no supporting evidence has been
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C., S.C. Helianthus floridanus is similar to and intergrades with H. angustifolius, which has narrower leaves, and H. simulans, which is more robust and
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var. angustifolium (Wiegand) G. L. Nesom (syn. A. lateriflorus var. angustifolius Wiegand); var. flagellare (Shinners) G. L. Nesom (syn. A. lateriflorus
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