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Kallstroemia parviflora (Warty caltrop)
Nugent, Louis R

Kallstroemia parviflora

Kallstroemia parviflora J.B.S. Norton

Warty Caltrop, Small-flowered Carpetweed

Zygophyllaceae (Creosote-Bush Family)

Synonym(s): Kallstroemia intermedia


USDA Native Status: L48 (N)

Kallstroemia parviflora has orange or yellow flowers and is prostrate in habit, spreading radially from a central taproot. All parts are hairy, and the beak on its fruit is longer than the round body of the fruit.


From the Image Gallery

7 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Annual
Habit: Herb
Root Type: Tap
Leaf Arrangement: Opposite
Leaf Complexity: Pinnate
Leaf Shape: Elliptic
Leaf Pubescence: Hirsute
Inflorescence: Axillary
Fruit Type: Schizocarp
Size Notes: Stems prostrate to decumbent to ascending, up to about 5 feet long.
Flower: Sepals lanceolate
Fruit: 3-4 mm. long, 4-6 mm. wide, with a cylindrical beak

Bloom Information

Bloom Color: Orange , Yellow
Bloom Time: Apr , May , Jun , Jul , Aug , Sep , Oct , Nov


USA: AZ , CA , CO , DC , IL , KS , MD , MO , MS , NM , NV , OK , PA , TX , UT

Growing Conditions

Light Requirement: Sun
Soil Moisture: Dry


Use Wildlife: Seeds are important dove and quail food.
Attracts: Birds

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Sibley Nature Center - Midland, TX
Brackenridge Field Laboratory - Austin, TX
Patsy Glenn Refuge, c/o Wimberley Birding Society - Wimberley, TX

Herbarium Specimen(s)

NPSOT 0887 Collected May 20, 1994 in Bexar County by Harry Cliffe
NPSOT 0108 Collected Sept. 3, 1987 in Bexar County by Harry Cliffe
NPSOT 0540 Collected Aug 3, 1987 in Bexar County by Harry Cliffe

3 specimen(s) available in the Digital Herbarium

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Kallstroemia parviflora in USDA Plants
FNA: Find Kallstroemia parviflora in the Flora of North America (if available)
Google: Search Google for Kallstroemia parviflora


Record Modified: 2023-02-15
Research By: TWC Staff

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