Plant Image
Flower spike
- ML

Yavapai County Native & Naturalized Plants

Oxytropis lambertii - purple locoweed

Other Common Names: Lambert crazyweed
Plant Form: Forb

Family: Fabaceae

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

Click on Any Image for a Larger View

Flower spike
Basal leaves
Forb Plant Description

Origin: Native   Life Cycle: Perennial
General Desc: Common on western rangelands. All livestock species can be poisoned by eating - it is usually eaten only when other forage is unavailable. Horses are particularly susceptible and become addicted after consuming it.
Height: 6 to 12 inches


Habitat Description: Grows on canyon bottoms and dry streambanks. It is also found on roadsides and disturbed areas, mostly at lower to middle elevations.
Plant Communities: Interior Chaparral, Semidesert Grasslands, Pinyon Juniper Woodland, Montane Conifer Forest, Disturbed Areas
Elevation: 5000 - 8000 feet

Flower Characteristics

Color: Purplish-pink     Shape: Irregular in elongated clusters     Tubular: Y     Flowering Period: Jul - Aug
Description: A tufted plant, usually covered with silvery hairs, with dense racemes of bright reddish-lavender pea flowers held just above the basal leaves by long stalks.

Leaf and Stem Characteristics

Leaf Color: Grayish-green     Leaf Type: Compound     Leaf Shape: Narrow     Leaf Margin: Smooth     Leaf Attachment: Basal     Leaves Clasp: N
Hairs: Leaves     Spines: N
Leaf Description: Basal, odd-pinnately compound, 4 to 7 inches long; 7 to 19 leaflets, linear to narrowly oblong, 1/4 to 1-1/2 inches long, less than 1-1/2 inches wide, silvery-white with minute ax-shaped hairs; tips pointed. Stemless.

Fruit and Seed Characteristics

Fruit Color: Brown   
Fruit Type: Pod
Fruit Notes: Cylindric, 1/3 to 1 inch long, densely covered with silky hairs.
Seed Notes: Seeds are smooth and brown.

  Arizona Cooperative Extension
Yavapai County
840 Rodeo Dr #C
Prescott, AZ 86305
(928) 445-6590
Version 3.1  
Last Updated: June 15, 2013  
Content Questions/Comments: Email Jeff Schalau  
Legal Disclaimer