BugwoodWiki Article

Russian-thistle
Salsola tragus L.

Overview

Appearance
Salsola tragus is an annual herb that can grow to 4 ft. (1.2 m) tall. It was introduced into the United States in the mid 1870s, possibly as a contaminant in flax seed.
Foliage
Leaves are alternate and narrow. Upper leaves have a sharp point at the apex and are 1.3-2 in. (3.3-5.1 cm) long.
Flowers
Flowering occurs from midsummer to fall, when small, pink to greenish flowers develop from the leaf axils. Each flower is subtended by 3, spine-tipped leaves.
Fruit
Fruits are 0.19-0.31 in. (4.8-7.9 mm) in diameter including the wings. Wings are opaque with smooth margins and veins.
Ecological Threat
After Salsola tragus matures it detaches from the root system and tumbles in the wind, spreading seed (like another common name “tumbleweed” suggests). It is native to Eurasia.

Resources

Selected Images


5159096
5159096

Russian-thistle
Salsola tragus
Plant(s)
Forest and Kim Starr
5162030
5162030

Russian-thistle
Salsola tragus
Flower(s)
Forest and Kim Starr
5162024
5162024

Russian-thistle
Salsola tragus
Flower(s)
Forest and Kim Starr
1363366
1363366

Russian-thistle
Salsola tragus
Plant(s)
Mary Ellen (Mel) Harte
1363367
1363367

Russian-thistle
Salsola tragus
Feature(s)
Mary Ellen (Mel) Harte
1363368
1363368

Russian-thistle
Salsola tragus
Feature(s)
Mary Ellen (Mel) Harte
1459792
1459792

Russian-thistle
Salsola tragus
Seedling(s)
Utah State University Archive
5162022
5162022

Russian-thistle
Salsola tragus
Seed(s)
Forest and Kim Starr
5162018
5162018

Russian-thistle
Salsola tragus
Seedling(s)
Forest and Kim Starr
5162029
5162029

Russian-thistle
Salsola tragus
Plant(s)
Forest and Kim Starr
5162031
5162031

Russian-thistle
Salsola tragus
Infestation
Forest and Kim Starr
5308087
5308087

Russian-thistle
Salsola tragus
Plant(s)
USDA PLANTS Database

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: Caryophyllidae
Order: Caryophyllales
Family: Chenopodiaceae
Genus: Salsola

Other System Links

Plants: SATR12
Bayer: SASKR
GRIN: 32817
ITIS: 520950
NPDN Pest: PBDAKBG

Synonyms and Other Names

Other Common Names:
prickly Russian thistle

Related Scientific Names:

Salsola iberica L.(Synonym)

Categories

Category: Forbs/Herbs