Plant Image

Yavapai County Native & Naturalized Plants

Kallstroemia californica - California caltrop

Plant Form: Forb

Family: Zygophyllaceae

line decor
  Home   Plant Communities Plant List Search Forbs Search Grasses Search Woody Plants Additional Resources About this Website
line decor

Click on Any Image for a Larger View

Max Licher @
Patrick Alexander @
Usage Rights: CC BY-NC (Attribution-Non-Commercial)
Patrick Alexander @
Forb Plant Description

Origin: Native   Life Cycle: Annual   Similar Species: Kallstroemia parviflora
General Desc: This plant grows in thick carpet-like masses on sandy substrates. The branching stem has compound leaves which are each made up of several widely spaced pairs of small oval-shaped green leaflets.
Identification notes: Petals are up to 1/8 inch long, orange-yellow fading to white; the beak of the fruit is stout, up to 1/8 inch long and shorter than the fruit (nutlet).
Height: 2 inches


Habitat Description: This plant is found in sandy or disturbed soils.
Plant Communities: Desert Scrub, Interior Chaparral, Semidesert Grasslands, Pinyon Juniper Woodland, Disturbed Areas
Elevation: 3500 - 5500 feet

Flower Characteristics

Color: Orange-yellow to white     Shape: Regular not in clusters     Tubular: N     Flowering Period: May - Oct
Description: Individual flowers have 5 rounded or oval petals and a ring of 10 stamens.

Leaf and Stem Characteristics

Leaf Color: Green     Leaf Type: Compound     Leaf Shape: Round or oval     Leaf Margin: Smooth     Leaf Attachment: Opposite     Leaves Clasp: N
Hairs: Leaves and stems     Spines: N
Leaf Description: Leaves are opposite and pinnate in pairs. Stems can be up to 2 feet long and sprawl along the ground.

Fruit and Seed Characteristics

Fruit Color: Brown   
Fruit Type: Nutlet
Fruit Notes: The fruit is a small body of 10 conjoined nutlets about 1/8 inch wide, which splits apart.

  Arizona Cooperative Extension
Yavapai County
840 Rodeo Dr #C
Prescott, AZ 86305
(928) 445-6590
Version 7.0  
Last Updated: May 10, 2017  
Content Questions/Comments: Email Jeff Schalau  
Legal Disclaimer