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Montana Field Guide

Montana Field Guides

Hoary Tansy-aster - Machaeranthera canescens
Other Names:  Dieteria canescens


Global Rank: G5
State Rank: S4S5

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 3

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General Description
Perennial. Stems ascending to erect, branched, 8–50 cm. Herbage canescent. Leaf blades linear to oblanceolate, 1–5 cm long, remotely dentate to entire. Involucre 6–9 mm high; phyllaries glandular, glabrate to canescent, oblanceolate. Rays 8 to 25, purple; ligules 5–10 mm long. Disk corollas 4–6 mm long. Achenes 3–4 mm long, strigose (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Our plants are variety canescens.

Species Range
Present
 


Range Comments
BC to SK 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: 55

(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 soil of grasslands, sagebrush steppe, badlands, sandhills, roadsides; 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:
Hoary Tansy-aster — Machaeranthera canescens.  Montana Field Guide.  .  Retrieved on , from