Plant Image
Little Thumb Butte - Sue Smith

Yavapai County Native & Naturalized Plants

Linum puberulum - plains flax, yellow flax

Synonyms: Cathartolinum puberulum, Linum rigidum Pursh var. puberulum, Mesynium puberulum
Plant Form: Forb or Subshrub

Family: Linaceae

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Bell Rock Trail, Sedona
Max Licher @
Bell Rock Trail, Sedona
Max Licher @
Little Thumb Butte
Sue Smith
Bell Rock Trail, Sedona
Max Licher @
Plant - spring
Little Thumb Butte
Sue Smith
Forb Plant Description

Origin: Native   Life Cycle: Annual
General Desc: Yellow to orange 5-petaled flowers are loosely clustered at the top of wiry stems. Gray-green narrow leaves are at intervals along the stem. The latin "puber" means downy and refers to the downy-haired character of the plant.
Identification notes: Stems ascending to spreading, branching from the base, densely covered with small soft hairs; leaves alternate and ascending; blades linear to linear-lanceolate; stems covered with soft hairs; yellow to orange flowers.
Height: To 8 inches


Habitat Description: Dry, open habitat including desert, mesas and low mountains.
Plant Communities: Desert Scrub, Interior Chaparral, Semidesert Grasslands, Pinyon Juniper Woodland
Elevation: 3500 - 6500 feet

Flower Characteristics

Color: Yellow to orange     Shape: Regular in round clusters     Tubular: N     Flowering Period: Apr - Oct
Description: Yellow to orange 5-petaled flowers have reddish and white inner rings. Flowers are to 2 inches wide and are loosely clustered at the top of slender stems.

Leaf and Stem Characteristics

Leaf Color: Grayish-green     Leaf Type: Simple     Leaf Shape: Narrow     Leaf Margin: Toothed     Leaf Attachment: Alternate and opposite     Leaves Clasp: N
Hairs: Stems     Spines: N
Leaf Description: Leaves are narrow and grasslike to 1 inch long along a slender stem, margins can be smooth or toothed.

Fruit and Seed Characteristics

Fruit Color: Brown   
Fruit Type: Capsule
Fruit Notes: Ovoid, splits into 5 segments at maturity.

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