Plant Image
Leaves and flowers

Yavapai County Native & Naturalized Plants

Myosurus cupulatus - Arizona mousetail

Plant Form: Forb

Family: Ranunculaceae

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Patrick Alexander @
Forb Plant Description

Origin: Native   Life Cycle: Annual
General Desc: Several stems from the base. The greenish elongated cylindrical structure which bears the flowers is the plant's dominant feature.
Identification notes: Achene length equals width, with a horseshoe-shaped basal and lateral border around the beak.
Height: 1 to 6 inches


Habitat Description: Dry, sandy hillsides or canyon bottoms. Also found near springs or creeks.
Plant Communities: Desert Scrub, Interior Chaparral, Semidesert Grasslands, Pinyon Juniper Woodland, Riparian
Elevation: 2900 - 4600 feet

Flower Characteristics

Color: White with pinkish edges     Shape: Regular in elongated clusters     Tubular: N     Flowering Period: Feb - May
Description: Sepals are faintly 3 veined. Flowerhead is an elongated cylindrical structure having multiple stems each bearing one flower.

Leaf and Stem Characteristics

Leaf Color: Green     Leaf Type: Simple     Leaf Shape: Narrow     Leaf Margin: Smooth     Leaf Attachment: Basal     Leaves Clasp: N
Hairs: No     Spines: N
Leaf Description: Stems are smooth greenish-tan.

Fruit and Seed Characteristics

Fruit Color: Light green   
Fruit Type: Achene
Fruit Notes: Heads of the achenes appear rough because of the projecting beaks.
Seed Notes: 1 seed per fruit.

  Arizona Cooperative Extension
Yavapai County
840 Rodeo Dr #C
Prescott, AZ 86305
(928) 445-6590
Version 8.0  
Last Updated: Feb 16, 2020  
Content Questions/Comments: Email Jeff Schalau  
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