Hymenoxys

Hymenoxys (rubberweed or bitterweed) is a genus of plants in the sunflower family, native to North and South America.[3][2][4] It was named by Alexandre Henri Gabriel de Cassini in 1828.[2]

Rubberweed
Bitterweed
Hymenoxys hoopesii
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Subfamily:
Asteroideae
Tribe:
Helenieae[1]
Genus:
Hymenoxys

Cass. 1828
Type species
Hymenoxys anthemoides (Juss.) Cass.[2]
Synonyms[1]
  • Plummera A.Gray
  • Dugaldia Cass.
  • Actinella Juss. ex Nutt.
  • Phileozera Buckley
  • Macdougalia A.Heller

Plants of this genus are toxic to sheep due to the presence of the sesquiterpene lactone hymenoxon.[5][6][7]

Species[1][8][9][10][11]
formerly included[11]

References
  1. "Flann, C (ed) 2009+ Global Compositae Checklist". Archived from the original on 2014-12-02. Retrieved 2014-12-02.
  2. Tropicos, Hymenoxys Cass.
  3. Cassini, Alexandre Henri Gabriel de, in Cuvier, F. 1828. Dictionnaire des Sciences Naturelles [Second edition] 55: 278–279in French
  4. Flora of North America, Bitterweed, rubberweed, Hymenoxys Cassini 1828.
  5. Everitt, J.H.; Lonard, R.L.; Little, C.R. (2007). Weeds in South Texas and Northern Mexico. Lubbock: Texas Tech University Press. ISBN 0-89672-614-2
  6. Pfeiffer, F. A. and M. C. Calhoun. (1987). Effects of environmental, site, and phenological factors on hymenoxon content of bitterweed, Hymenoxys odorata. Journal of Animal Science 65 1553-62.
  7. Texas A&M University, Toxicity: H. odorata Archived 2007-07-03 at the Wayback Machine
  8. Biota of North America Program 2013 county distribution maps
  9. Turner, B. L. 2013. The comps of Mexico. A systematic account of the family Asteraceae (chapter 11: tribe Helenieae). Phytologia Memoirs 16: 1–100.
  10. The Plant List search for Hymenoxys
  11. The Plant List, search for Hymenoxys


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