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Yavapai County Native & Naturalized Plants

Astragalus newberryi - Newberry's milkvetch

Plant Form: Forb or Subshrub

Family: Fabaceae

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Max Licher @, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
Max Licher @, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
Max Licher @, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
Forb Plant Description

Origin: Native   Life Cycle: Perennial
General Desc: Low growing in small tufts of many short stems, leaves are compound, stems and leaves covered with long silky hairs; old leaf bases are persistent; flowers with a conspicuous banner petal in contrast to the reduced keel and wing petals.
Identification notes: Plants short stemmed; flowers distinctive, large purple to white banner petals, wing and keel petals much reduced, usually vibrant purple; leaves and stems very hairy, hairs not attached at the middle, leaflets 3 to 9; fruit pods shaggy haired.
Height: 2 to 6 inches


Habitat Description: Found in rocky areas on mesas, most common in pinyon juniper woodlands.
Plant Communities: Pinyon Juniper Woodland
Elevation: 4500 - 7500 feet

Flower Characteristics

Color: Pink, purple, white     Shape: Irregular in elongated clusters     Tubular: N     Flowering Period: Mar - Apr
Description: Bilateral, arranged on short stalks along a central stem, 3 to 8 flowered, banner petals are conspicuous, 3/4 to 1-1/4 inches long and 1/4 to 1/2 inch wide, much larger than the wing and keel petals.

Leaf and Stem Characteristics

Leaf Color: Greenish-gray     Leaf Type: Compound     Leaf Shape: Round or oval     Leaf Margin: Smooth     Leaf Attachment: Basal and alternate     Leaves Clasp: N
Hairs: Leaves and stems     Spines: N
Leaf Description: Leaves 3/4 to 5 inches long, 3 to 15 leaflets, 1/4 to 3/4 inch long, with acute to blunt tips sometimes notched; plant without stems (acaulescent) or short-stemmed; leaves and stems are covered with long silky, partly spreading hairs.

Fruit and Seed Characteristics

Fruit Type: Pod
Fruit Notes: Spreading (almost horizontal), sessile (attached directly to the stems), ovate and inflated legumes, 1/2 to 1-1/4 inches long and 1/4 to 12 inches wide, each end tapering to a point, 1 chamber, surfaces densely woolly. White hairs 1/16 to 1/4 inch long.

  Arizona Cooperative Extension
Yavapai County
840 Rodeo Dr #C
Prescott, AZ 86305
(928) 445-6590
Version 8.0  
Last Updated: Nov 21, 2021
Content Questions/Comments: Email Mary Barnes  
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