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Machaeranthera bigelovii var. bigelovii (Bigelow's tansyaster)
Bransford, W.D. and Dolphia

Machaeranthera bigelovii var. bigelovii

Machaeranthera bigelovii (A. Gray) Greene var. bigelovii

Bigelow's Tansyaster, Plains Aster, Tansy Aster

Asteraceae (Aster Family)

Synonym(s): Aster aquifolius, Aster bigelovii, Aster pattersonii, Aster rubrotinctus, Machaeranthera aquifolia, Machaeranthera centaureoides, Machaeranthera pattersonii, Machaeranthera rubricaulis


USDA Native Status: L48 (N)

This is a showy, annual or biennial tansy aster with large, lavender-rayed flowers seen blooming en masse in autumn. The 1-3 ft. plant blooms to a lesser extent in spring and summer. Foliage on the leafy stems is sticky and hairy.


From the Image Gallery

1 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Biennial
Habit: Herb
Leaf: Green
Size Class: 1-3 ft.

Bloom Information

Bloom Color: Purple
Bloom Time: Aug , Sep , Oct , Nov


USA: CO , NM , NV , OK , WY
Native Distribution: W. CO, NM & AZ
Native Habitat: Canyons; slopes; plains; 3000-7000 ft.

Growing Conditions

Water Use: Low
Light Requirement: Part Shade
CaCO3 Tolerance: High
Soil Description: Shallow or rocky soils.
Conditions Comments: Plains aster can begin blooming as early as March, but its main bloom period starts in September.


Conspicuous Flowers: yes


Description: Not Available
Seed Collection: Not Available
Seed Treatment: Not Available
Commercially Avail: yes

Additional resources

USDA: Find Machaeranthera bigelovii var. bigelovii in USDA Plants
FNA: Find Machaeranthera bigelovii var. bigelovii in the Flora of North America (if available)
Google: Search Google for Machaeranthera bigelovii var. bigelovii


Record Modified: 2007-01-01
Research By: TWC Staff

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