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Ageratina herbacea

Secure  ( NatureServe) [1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Ageratina
Species:
A. herbacea
Binomial name
Ageratina herbacea
Synonyms [2]
Synonymy
  • Eupatorium ageratifolium var. herbaceum A.Gray
  • Eupatorium arizonicum (A.Gray) Greene
  • Eupatorium arizonicum (A.Gray) A.Nelson
  • Eupatorium betulifolium (Greene) B.L.Rob.
  • Eupatorium herbaceum (A.Gray) Greene
  • Eupatorium occidentale var. arizonicum A.Gray
  • Kyrstenia arizonica (A.Gray) Greene
  • Kyrstenia betulifolia Greene
  • Kyrstenia herbacea (A.Gray) Greene
Flower detail

Ageratina herbacea is a North American species of flowering plants in the family Asteraceae known by the common names fragrant snakeroot and Apache snakeroot. [3] It is native to desert regions ( Sonoran, Mojave, and Chihuahuan Deserts) of the southwestern United States (southeastern California, southern Nevada, southern Utah, Colorado, Arizona, New Mexico, western Texas) and northern Mexico ( Baja California, Chihuahua, Coahuila, Sonora). It grows in rocky slopes in conifer forests and woodlands. [4] [5] [6] [7]

Ageratina herbacea is a perennial herb growing a green, fuzzy stem from a woody caudex to heights between about 50 and 70 centimeters. The leaves are yellow to green or grayish and are triangular to heart-shaped. The inflorescence is a cluster of fuzzy flower heads under a centimeter long containing long, protruding white disc florets and no ray florets. The fruit is an achene a few millimeters long with a rough bristly pappus. [8]

Etymology

Ageratina is derived from Greek meaning 'un-aging', in reference to the flowers keeping their color for a long time. This name was used by Dioscorides for a number of different plants. [9]

References

  1. ^ "NatureServe Explorer - Ageratina herbacea". NatureServe Explorer Ageratina herbacea. NatureServe. 2022-06-22. Retrieved 22 Jun 2022.
  2. ^ "Ageratina herbacea (A.Gray) R.M.King & H.Rob.". The Global Compositae Checklist (GCC) – via The Plant List. Note that this website has been superseded by World Flora Online
  3. ^ USDA, NRCS (n.d.). "Ageratina herbacea". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team.
  4. ^ Nesom, Guy L. (2006). "Ageratina herbacea". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 21. New York and Oxford: Oxford University Press – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  5. ^ "Ageratina herbacea". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014.
  6. ^ "Ageratina herbacea". Calflora. Berkeley, California: The Calflora Database.
  7. ^ Turner, B. L. 1997. The Comps of Mexico: A systematic account of the family Asteraceae, vol. 1 – Eupatorieae. Phytologia Memoirs 11: i–iv, 1–272
  8. ^ Hickman, James C., ed. (1993). "Ageratina herbacea". The Jepson Manual: Higher Plants of California. University and Jepson Herbaria.
  9. ^ Gledhill, David (2008). "The Names of Plants". Cambridge University Press. ISBN  9780521866453 (hardback), ISBN  9780521685535 (paperback). pp 39

External links

Ageratina herbacea in the CalPhotos photo database, University of California, Berkeley