- Ambrosia eriocentra
Taxobox
name = "Ambrosia eriocentra"
image_width = 220px
regnum =Plant ae
divisio = Magnoliophyta
classis =Magnoliopsida
ordo =Asterales
familia =Asteraceae
genus = "Ambrosia"
species = "A. eriocentra"
binomial = "Ambrosia eriocentra"
binomial_authority = (A.Gray) W.W.Payne
synonyms ="Franseria eriocentra""Ambrosia eriocentra" is a species of
ragweed known by the common names woolly bursage and woolly fruit bur ragweed. 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 roundedshrub reaching 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, theinflorescence 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.External links
* [http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?609,648,656 Jepson Manual Treatment]
* [http://plants.usda.gov/java/profile?symbol=AMER USDA Plants Profile]
* [http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-taxon=Ambrosia+eriocentra Photo gallery]
Wikimedia Foundation. 2010.
