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Rugelia

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Rugelia

Vulnerable  (NatureServe)
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Subfamily: Asteroideae
Tribe: Senecioneae
Genus: Rugelia
Shuttlew. ex Chapm.
Species:
R. nudicaulis
Binomial name
Rugelia nudicaulis
Synonyms[1]
Homotypic synonyms
    • Cacalia rugelia (A.Gray) T.M.Barkley & Cronquist
    • Senecio rugelia A.Gray

Rugelia nudicaulis (Rugel's Indian plantain[2] or Rugels ragwort), the sole species of the genus Rugelia, blooms in summer. It is a wildflower endemic to higher elevations in the Great Smoky Mountains.[3] It is a rare species in Tennessee.[4] Genetic diversity in this plant, assessed using allozymes, is so low that the species may not survive changing environmental conditions.[5] Both the scientific name and the common names honor Ferdinand Rugel, a botanist and plant collector who collected plant specimens throughout the southeastern United States during the period 1840–1848.

Taxonomy

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The monotypic genus Rugelia was described by the American botanist Alvan Wentworth Chapman in 1860.[6] In his description, Chapman attributed both the generic name Rugelia and the specific epithet nudicaulis to R.J. Shuttleworth.[7] The names honor Ferdinand Rugel,[8] the botanist who collected the type specimen of Rugelia nudicaulis in 1842.[1][9]

In 1883, the American botanist Asa Gray placed Rugelia nudicaulis in genus Senecio as Senecio rugelia.[10] In 1974, Senecio rugelia was placed in genus Cacalia as Cacalia rugelia.[11] As of December 2024, both Senecio rugelia A.Gray and Cacalia rugelia (A.Gray) T.M.Barkley & Cronquist are considered to be homotypic synonyms of Rugelia nudicaulis Shuttlew. ex Chapm.[1]

References

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  1. ^ a b c "Rugelia nudicaulis Shuttlew. ex Chapm.". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 13 December 2024.
  2. ^ NRCS. "Rugelia nudicaulis". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 26 October 2015.
  3. ^ University of Tennessee Herbarium
  4. ^ Tennessee state list
  5. ^ Journal of Heredity article
  6. ^ "Rugelia Shuttlew. ex Chapm.". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens. Retrieved 12 December 2024.
  7. ^ Chapman & Eaton (1865), p. 246.
  8. ^ "Ferdinand Ignatius Xavier Rugel". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens. Retrieved 12 December 2024.
  9. ^ "Specimen K000802981: Rugelia nudicaulis Shuttlew. ex Chapm.". Kew Data Portal. Royal Botanic Gardens, Kew. Retrieved 13 December 2024.
  10. ^ "Senecio rugelia A.Gray". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens. Retrieved 13 December 2024.
  11. ^ "Cacalia rugelia (A.Gray) T.M.Barkley & Cronquist". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens. Retrieved 13 December 2024.
  • Horn, Cathcart, Hemmerly, Duhl, Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians, Lone Pine Publishing, (2005) p 372, ISBN 978-1-55105-428-5

Bibliography

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