courtesy of Weeds of the West)
Scientific/Common Name: Chondrilla juncea,
Description: This weed is a perennial with branched
grow up to four feet tall, and looks as if it is leafless. Leaves
basal and look like a dandelion where the flower stem grows. The
leaves are thin and grow up to 4 inches long. The inside of the
leaves make a milky like substance. The lower four to six inches
stems are covered with brown hairs. The seeds have a rough
have a white hair like structure. (5, 2)
Roots: The roots of this weed can reach up to 8 feet
If the roots are severed they can reach the surface of the soil
about 4 feet under. (2)
Stems: This weed has green stems and narrow leaves.
give the weed a skeleton like look or appearance. The bottom 4 to
inches has rough little hairs that point downward and have a reddish
them. This characteristic makes it easier to distinguish from
similar weeds. (5, 3, 2)
Leaves: This plant has a rosette of basal leaves that
to the rosette of a dandelion, and are sharp with deep toothed edges.
Flowers: The yellow flower heads, which are 3/4 of an
diameter, are spread all over the stem of the weed. The flower
either single or in clumps of 2 to 5. (2, 1)
Fruits/Seeds: Every one of these plants has the
potential to make
20,000 seeds. The seed color varies from light brown to black. (2)
Methods of Reproduction/Spread: The way rush skeleton
reproduces is by seed and vegetative growth. The plant flowers
Life Duration: This weed is a short-lived perennial.
Habitat: This particular weed is found mostly in waste
roadways, or any drought or disturbance weakened areas. The weed
found in sagebrush-infested areas. (3, 2)
1. Fred Bentler. "King County." Rush Skeletonweed. August 19, 2003. .
2. "Rush Skeletonweed." . . MC Weed District. 3/11/04, <http://www.mslacountyweed.org/pages/CHJU.html>.
3. "Center For Invasive Plant Management." Weed of the Week. Copyright
2001. . 3/11/04, <http://www.weedcenter.org/info/wowarchives/jan02wow.html>.
4. "RUSH SKELETON WEED." BLM Prineville Dist.. February 19, 2000.
Department of Agriculture. 3/11/04, <http://www.or.blm.gov/Prineville/weed/rushskel.htm>.
5. "Rush Skeletonweed." Minidoka County. February, 2000. 2004 Minidoka
County, Idaho. 3/10/04, <http://www.minidoka.id.us/weed/noxious/rush_skeletonweed.htm>.
By: Layne and Zac 4/5/04.
Updated By: Ben Foster 3/1/07.
to Weed ID mtwow.org HOME