From Wikipedia, the free encyclopedia Ambrosia eriocentra
Ambrosia eriocentra
Woolly Bursage Ambrosia eriocentra
(A.Gray) W.W.Payne[1]
Synonyms
Franseria eriocentra A.Gray (basionym)[1]
Ambrosia eriocentra is a species of ragweed known by the
common names woolly bursage and woollyfruit burr rag-
weed.
weed
It is native to the southwestern United States where it
grows in the deserts and surrounding ridges up to about
1700 meters in elevation. This is a rounded shrub reach-
ing over 1.5 meters in maximum height. The stems are
brownish gray in color, with young twigs coated in light
woolly fibers and older branches bare. Leaves are lance-
shaped and up to 9 centimeters long, not counting the
winged petioles. The leaves have rolled lobed or toothed
edges. As in other ragweeds, the inflorescence has a few
staminate (male) flower heads next to several single-
flowered pistillate heads. The fruit is a green burr with
long, silky white hairs and several hair-tufted sharp
spines. The burr is around a centimeter long.
Woolly bursage on a portion of periodically-exposed, dry References
river bed
(Red Rock Canyon in the Spring Mountains of southern [1] ^ In: Journal of the Arnold Arboretum 45(4): 423. 1964.
Nevada, elevation about 1300 m). "Name - Ambrosia eriocentra (A.Gray) W.W.Payne".
Tropicos. Saint Louis, Missouri: Missouri Botanical
Scientific classification
Garden. http://www.tropicos.org/Name/2709270.
Kingdom: Plantae Retrieved March 25, 2010. "Basionym: Franseria
(unranked): Angiosperms eriocentra A.Gray; Published in The Proceedings of the
American Academy of Arts and Sciences 7(2): 355.
(unranked): Eudicots 1868."
(unranked): Asterids
Order: Asterales External links
Family: Asteraceae • Jepson Manual Treatment
• USDA Plants Profile
Genus: Ambrosia
• Photo gallery
Species: A. eriocentra
Binomial name
Retrieved from "http://en.wikipedia.org/w/index.php?title=Ambrosia_eriocentra&oldid=461991304"
Categories:
• Ambrosia
• Plants described in 1868
• Flora of Nevada
• Heliantheae stubs
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From Wikipedia, the free encyclopedia Ambrosia eriocentra
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