Ambrosia ilicifolia

Taxobox
name = "Ambrosia ilicifolia"


image_width = 220px
regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Asterales
familia = Asteraceae
genus = "Ambrosia"
species = "A. ilicifolia"
binomial = "Ambrosia ilicifolia"
binomial_authority = (A.Gray) W.W.Payne
synonyms ="Franseria ilicifolia"

"Ambrosia ilicifolia" is a species of ragweed known by the common name hollyleaf bur ragweed. It is native to the deserts and mountains of western Arizona and adjacent southeastern California and Baja California, where it grows in dry washes, scrub, and other local habitat. This is a small, matted shrub under a meter in height. Its stiff, straight branches are green, glandular, and leafy when young, and light gray and leafless when older. The holly-like leaves are leathery but brittle, oval-shaped to rounded, and edged with spine-tipped teeth. They are green, veiny, and sticky with resin. The inflorescence holds several spiny staminate (male) flower heads next to larger pistillate (female) heads. Each pistillate head produces usually two fruits, which are yellow-brown burrs nearly 2 centimeters wide. Each burr is rounded, sticky, and covered in hooked spines.

External links

* [http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?609,648,657 Jepson Manual Treatment]
* [http://plants.usda.gov/java/profile?symbol=AMIL2 USDA Plants Profile]
* [http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-taxon=Ambrosia+ilicifolia Photo gallery]