Plant Image
Flower heads

Yavapai County Native & Naturalized Plants

Euthamia occidentalis - western goldentop

Synonyms: Aster baccharoides, Euthamia californica, E. linearifolia, Haplopppus baccaroides, Solidago lanceolata, S. occidentalis
Other Common Names: western goldenrod, western flat-topped goldenrod, grass-leaf goldenrod
Plant Form: Forb or Subshrub

Family: Asteraceae

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Frankie Coburn @, 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: Much-branched spreading to upright plant with thick grayish-green stems growing from horizontal underground stems (rhizomes). Narrow leaves are 3 to 5 veined with many glands. Flowering stalk is a dense, flat-topped cluster of numerous yellow flowerheads.
Identification notes: Stems stout, spreading, ascending to erect, much branched; leaves gland-dotted, 3 to 5 veined, 10 to 27 times longer than wide; ray flowers outnumber disc flowers; flowers in narrow, elongated clusters, bracts light yellowish-brown, often green-tipped.
Height: To about 6-1/2 feet


Habitat Description: Moist to wet soils of lake shores, ponds, along rivers, streambeds, meadows, freshwater to saline marshes and irrigation ditches. Often grows in association with cattails, rushes and sedges.
Plant Communities: Riparian, Disturbed Areas
Elevation: 4500 - 7000 feet

Flower Characteristics

Color: Yellow     Shape: Daisy or dandelion-like in elongated clusters     Tubular: N     Flowering Period: Aug - Sep
Description: Flowerheads are united into loose clusters at the ends of slim branches. Each flowerhead in the cluster consists of 15 to 25 strap-shaped flowers (ray florets) about 1/16 inch long which surround the 7 to 18 tube-like flowers (disc florets) in the center.

Leaf and Stem Characteristics

Leaf Color: Grayish-green     Leaf Type: Simple     Leaf Shape: Narrow     Leaf Margin: Smooth     Leaf Attachment: Alternate     Leaves Clasp: N
Hairs: Leaves     Spines: N
Leaf Description: Leaves are stalkless and much longer than wide growing to 4 inches long and from 1/8 to 1/2 inch wide. The leaf margins are rough to the touch (scabrous) due to the presence of short stiff hairs. The upper leaf surface and veins are often sparsely hairy.

Fruit and Seed Characteristics

Fruit Color: Brown   
Fruit Type: Achene
Fruit Notes: The fruit is brown, dry, 1-seeded, narrowly cone-shaped and less than 1/16 inch. It has a light brown to white, bristly parachute-like tuft of hairs (pappus) that is about the length of the fruit and is attached at the wider end aiding in wind dispersal.
Seed Notes: 1 seed is produced by the fruit. The fruit does not open at maturity to release the seed.

  Arizona Cooperative Extension
Yavapai County
840 Rodeo Dr #C
Prescott, AZ 86305
(928) 445-6590
Version 8.0  
Last Updated: Dec 13, 2022
Content Questions/Comments: Email Matt Halldorson  
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