BugwoodWiki Article

rush skeletonweed
Chondrilla juncea L.

Overview

Appearance
Chondrilla juncea is a perennial forb that can grow up to 4 ft. (1.2 m) tall.
Foliage
Coarse-looking, multiple stems appear leafless due to inconspicuous leaves and arise from a basal rosette of sharply lobed leaves. The lower 4-6 in. (10.2-15.2 cm) of stem is covered with coarse brown hairs. Both stem and leaves produce a milky sap when broken.
Flowers
Flowers are small and yellow and develop in the mid-summer to fall. Mature, healthy plants can produce 1,500 flower heads and up to 20,000 seeds. Flowers bloom from July to September.
Fruit
Fruit is oblong, tapered at both ends, pale to dark brown, and 0.11-0.15 in. (3-4 mm) long. Seed production continues from July into November.
Ecological Threat
Chondrilla juncea invades dry rangelands in the Western U. S., displaces native species, and reduces forage for livestock and wildlife. It is native to Europe, Asia, and Africa and was accidentally introduced to the U. S. as a contaminant of fodder in 1914.

Resources

Selected Images


0022088
0022088

rush skeletonweed
Chondrilla juncea
Plant(s)
Gary L. Piper
1459567
1459567

rush skeletonweed
Chondrilla juncea
Flower(s)
Steve Dewey
1459568
1459568

rush skeletonweed
Chondrilla juncea
Root(s)
Utah State University Archive
1459570
1459570

rush skeletonweed
Chondrilla juncea
Plant(s)
Utah State University Archive
1459571
1459571

rush skeletonweed
Chondrilla juncea
Plant(s)
Utah State University Archive
1459572
1459572

rush skeletonweed
Chondrilla juncea
Plant(s)
Utah State University Archive
1459574
1459574

rush skeletonweed
Chondrilla juncea
Infestation
Utah State University Archive
1459575
1459575

rush skeletonweed
Chondrilla juncea
Flower(s)
Steve Dewey
5306098
5306098

rush skeletonweed
Chondrilla juncea
Plant(s)
USDA PLANTS Database
5306099
5306099

rush skeletonweed
Chondrilla juncea
Seed(s)
Steve Hurst

Maps


EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org

EDDMapS Distribution

State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit Invasive.org

State Regulated List

Taxonomic Rank

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Asteridae
Order: Asterales
Family: Asteraceae
Genus: Chondrilla

Other System Links

Plants: CHJU
Bayer: CHOJU
GRIN: 10317
ITIS: 37029
NPDN Pest: PBFASBA

Synonyms and Other Names

Other Common Names:
skeletonweed

Categories

Category: Forbs/Herbs