Plant Image
Flower heads


Yavapai County Native & Naturalized Plants

Machaeranthera bigelovii - Bigelow's tansyaster

Synonyms: Dieteria biegelovii, Aster bigelovii, Dieteria canescens var. incana, Machaeranthera bigelovii and more see SEINET
Other Common Names: Purple tansy aster, sticky aster
Plant Form: Forb or Subshrub

Family: Asteraceae


   
 
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Bracts
Max Licher @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
Leaves
Max Licher @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
Plants
Max Licher @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
Forb Plant Description

Origin: Native   Life Cycle: Biennial or perennial   Similar Species: Dieteria canescens
General Desc: Taprooted; tall, stems erect, moderately branched, brownish stems bearing a sparse covering of thin leaves, topped by pinkish-purple to purple flowers, each consisting of around 30 ray florets.
Identification notes: Stems with diffuse glandular hairs, rarely branching at the base; flower bracts in several series, green tipped, glandular and spreading; leaves sometimes toothed, but not spiny; ray flowers pinkish-purple to purple, disc flowers yellow.
Height: 8 to 40 inches


Habitat

Habitat Description: Found on rocky slopes, in canyons, and along roadsides.
Plant Communities: Interior Chaparral, Semidesert Grasslands, Pinyon Juniper Woodland, Montane Conifer Forest, Disturbed Areas
Elevation: 3000 - 7000 feet


Flower Characteristics

Color: Purple to pinkish-purple     Shape: Daisy or dandelion-like not in clusters     Tubular: N     Flowering Period: Mar - Nov
Description: Showy flowers with radiating pinkish-purple to purple ray flowers with yellow centers (disc flowers) on stiff stems; whorls of bracts below with sticky hairs. Flowers about 1-1/2 inches.


Leaf and Stem Characteristics

Leaf Color: Green     Leaf Type: Simple     Leaf Shape: Narrow     Leaf Margin: Toothed     Leaf Attachment: Alternate     Leaves Clasp: Y
Hairs: Leaves and stems     Spines: N
Leaf Description: Sometimes toothed narrow leaves mostly near the base, slightly hairy, glandular, alternate and sessile (without stems).


Fruit and Seed Characteristics

Fruit Type: Achene
Fruit Notes: Slightly hairy with fine, hairs slightly pressed against leaves and stems, about 1/8 inch long. Topped with bristles.


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