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Montana Field Guide

Montana Field Guides

Tanseyleaf Tansy-aster - Machaeranthera tanacetifolia
Other Names:  Aster tanacetifolius


Global Rank: G5
State Rank: SNR

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value:

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General Description
Annual or biennial. Stems erect, often branched, 5–20 cm. Herbage puberulent, stipitate-glandular. Leaf blades 2–10 cm long, deeply 2 to 3 times finely pinnately dissected. Involucre 6–11 mm high; phyllaries glandular, puberulent, linear-lanceolate, acuminate. Rays 8 to 40, purple; ligules 8–15 mm long. Disk corollas 4–6 mm long. Achenes 2–4 mm long, strigose (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
AB south to CA, AZ, NM and TX (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 9

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Sparsely vegetated, often sandy soil of grasslands, shrub steppe; plains, valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Tanseyleaf Tansy-aster — Machaeranthera tanacetifolia.  Montana Field Guide.  .  Retrieved on , from