Ambrosia cordifolia

Ambrosia cordifolia
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Subfamily: Heliantheae
Genus: Ambrosia
Species: A. cordifolia
Binomial name
Ambrosia cordifolia
(A. Gray) W.W. Payne
Synonyms[1][2]
  • Franseria cordifolia A.Gray
  • Franseria malvacea Rydb.
  • Gaertnera cordifolia (A.Gray) Kuntze
  • Gaertneria cordifolia (A.Gray) Kuntze

Ambrosia cordifolia, called the Tucson bur ragweed,[3] is a North American species of plant in the sunflower family. It is native to northern Mexico (Sonora, Sinaloa, San Luis Potosí, Guanajuato, Baja California Sur) and the State of Arizona in the United States.[4][5][6]

Ambrosia cordifolia is a shrub up to 50 cm (20 inches) tall. Leaves are triangular or heart-shaped. Flower heads are small and inconspicuous, as the plant is wind-pollinated. The heads develop into spiny burs as the seeds ripen.[7]

The reference to the Arizona city of Tucson in the common name refers to the species' first discovery by Cyrus G. Pringle in the mountains near Tucson in 1884.[8]

References

  1. ↑ Tropicos, Ambrosia cordifolia (A. Gray) W.W. Payne
  2. ↑ The Plant List Ambrosia cordifolia (A.Gray) W.W.Payne
  3. ↑ Southeastern Arizona Wildflowers and Plants, Ambrosia cordifolia – Tucson Bur Ragweed
  4. ↑ Biota of North America Program 2014 county distribution map
  5. ↑ Tropicos, specimen listing for Ambrosia cordifolia (A. Gray) W.W. Payne
  6. ↑ Payne, Willard William 1964. Journal of the Arnold Arboretum 45(4): 421
  7. ↑ Flora of North America, Vol. 21 Page 14 Ambrosia cordifolia (A. Gray) W. W. Payne
  8. ↑ Gray, Asa 1884. Synoptical Flora of North America 1(2): 445 as Franseria cordifolia

External links


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